diff --git a/frontend/src/components/MailBox.vue b/frontend/src/components/MailBox.vue
index ee692ad4..7ceb52ec 100644
--- a/frontend/src/components/MailBox.vue
+++ b/frontend/src/components/MailBox.vue
@@ -90,7 +90,7 @@ const { t } = useI18n({
       saveToS3: 'Save to S3',
       multiAction: 'Multi Action',
       cancelMultiAction: 'Cancel Multi Action',
-      selectAll: 'Select All',
+      selectAll: 'Select All of This Page',
       unselectAll: 'Unselect All',
     },
     zh: {
@@ -109,7 +109,7 @@ const { t } = useI18n({
       saveToS3: '保存到S3',
       multiAction: '多选',
       cancelMultiAction: '取消多选',
-      selectAll: '全选',
+      selectAll: '全选本页',
       unselectAll: '取消全选',
     }
   }
@@ -387,7 +387,8 @@ onBeforeUnmount(() => {
           </div>
         </template>
         <template #2>
-          <n-card v-if="curMail" class="mail-item" :title="curMail.subject" style="overflow: auto; max-height: 100vh;">
+          <n-card :bordered="false" embedded v-if="curMail" class="mail-item" :title="curMail.subject"
+            style="overflow: auto; max-height: 100vh;">
             <n-space>
               <n-tag type="info">
                 ID: {{ curMail.id }}
@@ -434,7 +435,7 @@ onBeforeUnmount(() => {
             </iframe>
             <div v-else v-html="curMail.message" style="margin-top: 10px;"></div>
           </n-card>
-          <n-card class="mail-item" v-else>
+          <n-card :bordered="false" embedded class="mail-item" v-else>
             <n-result status="info" :title="t('pleaseSelectMail')">
             </n-result>
           </n-card>
@@ -483,7 +484,7 @@ onBeforeUnmount(() => {
       <n-drawer v-model:show="curMail" width="100%" placement="bottom" :trap-focus="false" :block-scroll="false"
         style="height: 80vh;">
         <n-drawer-content :title="curMail ? curMail.subject : ''" closable>
-          <n-card style="overflow: auto;">
+          <n-card :bordered="false" embedded style="overflow: auto;">
             <n-space>
               <n-tag type="info">
                 ID: {{ curMail.id }}
diff --git a/frontend/src/components/SendBox.vue b/frontend/src/components/SendBox.vue
index 57bbd67c..b52ba169 100644
--- a/frontend/src/components/SendBox.vue
+++ b/frontend/src/components/SendBox.vue
@@ -1,5 +1,5 @@
 <script setup>
-import { watch, onMounted, ref } from "vue";
+import { watch, onMounted, ref, computed } from "vue";
 import { useMessage } from 'naive-ui'
 import { useI18n } from 'vue-i18n'
 import { useGlobalState } from '../store'
@@ -9,6 +9,11 @@ const message = useMessage()
 const isMobile = useIsMobile()
 
 const props = defineProps({
+  enableUserDeleteEmail: {
+    type: Boolean,
+    default: false,
+    requried: false
+  },
   showEMailFrom: {
     type: Boolean,
     default: false
@@ -18,6 +23,11 @@ const props = defineProps({
     default: () => { },
     requried: true
   },
+  deleteMail: {
+    type: Function,
+    default: () => { },
+    requried: false
+  },
 })
 
 const { isDark, mailboxSplitSize } = useGlobalState()
@@ -30,19 +40,35 @@ const pageSize = ref(20)
 const curMail = ref(null);
 const showCode = ref(false)
 
+const multiActionMode = ref(false)
+const showMultiActionDelete = ref(false)
+const multiActionDeleteProgress = ref({ percentage: 0, tip: '0/0' })
+
 const { t } = useI18n({
   messages: {
     en: {
       success: 'Success',
       refresh: 'Refresh',
       showCode: 'Change View Original Code',
-      pleaseSelectMail: "Please select a mail to view."
+      pleaseSelectMail: "Please select a mail to view.",
+      delete: 'Delete',
+      deleteMailTip: 'Are you sure you want to delete mail?',
+      multiAction: 'Multi Action',
+      cancelMultiAction: 'Cancel Multi Action',
+      selectAll: 'Select All of This Page',
+      unselectAll: 'Unselect All',
     },
     zh: {
       success: '成功',
       refresh: '刷新',
       showCode: '切换查看元数据',
       pleaseSelectMail: "请选择一封邮件查看。",
+      delete: '删除',
+      deleteMailTip: '确定要删除邮件吗?',
+      multiAction: '多选',
+      cancelMultiAction: '取消多选',
+      selectAll: '全选本页',
+      unselectAll: '取消全选',
     }
   }
 });
@@ -105,6 +131,71 @@ const onSpiltSizeChange = (size) => {
   mailboxSplitSize.value = size;
 }
 
+const deleteMail = async () => {
+  try {
+    await props.deleteMail(curMail.value.id);
+    message.success(t("success"));
+    curMail.value = null;
+    await refresh();
+  } catch (error) {
+    message.error(error.message || "error");
+  }
+};
+
+const showMultiActionMode = computed(() => {
+  return props.enableUserDeleteEmail;
+});
+
+const multiActionModeClick = (enableMulti) => {
+  if (enableMulti) {
+    data.value.forEach((item) => {
+      item.checked = false;
+    });
+    multiActionMode.value = true;
+  } else {
+    multiActionMode.value = false;
+    data.value.forEach((item) => {
+      item.checked = false;
+    });
+  }
+}
+
+const multiActionSelectAll = (checked) => {
+  data.value.forEach((item) => {
+    item.checked = checked;
+  });
+}
+
+const multiActionDeleteMail = async () => {
+  try {
+    loading.value = true;
+    const selectedMails = data.value.filter((item) => item.checked);
+    if (selectedMails.length === 0) {
+      message.error(t('pleaseSelectMail'));
+      return;
+    }
+    multiActionDeleteProgress.value = {
+      percentage: 0,
+      tip: `0/${selectedMails.length}`
+    };
+    for (const [index, mail] of selectedMails.entries()) {
+      await props.deleteMail(mail.id);
+      showMultiActionDelete.value = true;
+      multiActionDeleteProgress.value = {
+        percentage: Math.floor((index + 1) / selectedMails.length * 100),
+        tip: `${index + 1}/${selectedMails.length}`
+      };
+    }
+    message.success(t("success"));
+    await refresh();
+  } catch (error) {
+    message.error(error.message || "error");
+  } finally {
+    loading.value = false;
+    showMultiActionDelete.value = true;
+  }
+}
+
 onMounted(async () => {
   await refresh();
 });
@@ -112,70 +203,105 @@ onMounted(async () => {
 
 <template>
   <div>
-    <n-split class="left" v-if="!isMobile" direction="horizontal" :max="0.75" :min="0.25"
-      :default-size="mailboxSplitSize" :on-update:size="onSpiltSizeChange">
-      <template #1>
-        <div class="center">
+    <div v-if="!isMobile" class="left">
+      <div style="margin-bottom: 10px;">
+        <n-space v-if="multiActionMode">
+          <n-button @click="multiActionModeClick(false)" tertiary>
+            {{ t('cancelMultiAction') }}
+          </n-button>
+          <n-button @click="multiActionSelectAll(true)" tertiary>
+            {{ t('selectAll') }}
+          </n-button>
+          <n-button @click="multiActionSelectAll(false)" tertiary>
+            {{ t('unselectAll') }}
+          </n-button>
+          <n-popconfirm v-if="enableUserDeleteEmail" @positive-click="multiActionDeleteMail">
+            <template #trigger>
+              <n-button tertiary type="error">{{ t('delete') }}</n-button>
+            </template>
+            {{ t('deleteMailTip') }}
+          </n-popconfirm>
+        </n-space>
+        <n-space v-else>
+          <n-button v-if="showMultiActionMode" @click="multiActionModeClick(true)" type="primary" tertiary>
+            {{ t('multiAction') }}
+          </n-button>
           <div style="display: inline-block; margin-right: 10px;">
-            <n-pagination v-model:page="page" v-model:page-size="pageSize" :item-count="count" simple size="small" />
+            <n-pagination v-model:page="page" v-model:page-size="pageSize" :item-count="count"
+              :page-sizes="[20, 50, 100]" show-size-picker />
           </div>
-          <n-button @click="refresh" size="small" type="primary" tertiary>
+          <n-button @click="refresh" type="primary" tertiary>
             {{ t('refresh') }}
           </n-button>
-        </div>
-        <div style="overflow: auto; height: 80vh;">
-          <n-list hoverable clickable>
-            <n-list-item v-for="row in data" v-bind:key="row.id" @click="() => clickRow(row)"
-              :class="mailItemClass(row)">
-              <n-thing :title="row.subject">
-                <template #description>
-                  <n-tag type="info">
-                    ID: {{ row.id }}
-                  </n-tag>
-                  <n-tag type="info">
-                    {{ `${row.created_at} UTC` }}
-                  </n-tag>
-                  <n-tag v-if="showEMailFrom" type="info">
-                    FROM: {{ row.address }}
-                  </n-tag>
-                  <n-tag type="info">
-                    TO: {{ row.to_mail }}
-                  </n-tag>
+        </n-space>
+      </div>
+      <n-split direction="horizontal" :max="0.75" :min="0.25" :default-size="mailboxSplitSize"
+        :on-update:size="onSpiltSizeChange">
+        <template #1>
+          <div style="overflow: auto; height: 80vh;">
+            <n-list hoverable clickable>
+              <n-list-item v-for="row in data" v-bind:key="row.id" @click="() => clickRow(row)"
+                :class="mailItemClass(row)">
+                <template #prefix v-if="multiActionMode">
+                  <n-checkbox v-model:checked="row.checked" />
                 </template>
-              </n-thing>
-            </n-list-item>
-          </n-list>
-        </div>
-      </template>
-      <template #2>
-        <n-card v-if="curMail" class="mail-item" :title="curMail.subject" style="overflow: auto; max-height: 100vh;">
-          <n-space>
-            <n-tag type="info">
-              ID: {{ curMail.id }}
-            </n-tag>
-            <n-tag type="info">
-              {{ `${curMail.created_at} UTC` }}
-            </n-tag>
-            <n-tag type="info">
-              FROM: {{ curMail.address }}
-            </n-tag>
-            <n-tag type="info">
-              TO: {{ curMail.to_mail }}
-            </n-tag>
-            <n-button size="small" tertiary type="info" @click="showCode = !showCode">
-              {{ t('showCode') }}
-            </n-button>
-          </n-space>
-          <pre v-if="showCode" style="margin-top: 10px;">{{ curMail.raw }}</pre>
-          <pre v-else-if="!curMail.is_html" style="margin-top: 10px;">{{ curMail.content }}</pre>
-          <div v-else v-html="curMail.content" style="margin-top: 10px;"></div>
-        </n-card>
-        <n-card class="mail-item" v-else>
-          <n-result status="info" :title="t('pleaseSelectMail')">
-          </n-result>
-        </n-card>
-      </template>
-    </n-split>
+                <n-thing :title="row.subject">
+                  <template #description>
+                    <n-tag type="info">
+                      ID: {{ row.id }}
+                    </n-tag>
+                    <n-tag type="info">
+                      {{ `${row.created_at} UTC` }}
+                    </n-tag>
+                    <n-tag v-if="showEMailFrom" type="info">
+                      FROM: {{ row.address }}
+                    </n-tag>
+                    <n-tag type="info">
+                      TO: {{ row.to_mail }}
+                    </n-tag>
+                  </template>
+                </n-thing>
+              </n-list-item>
+            </n-list>
+          </div>
+        </template>
+        <template #2>
+          <n-card :bordered="false" embedded v-if="curMail" class="mail-item" :title="curMail.subject"
+            style="overflow: auto; max-height: 100vh;">
+            <n-space>
+              <n-tag type="info">
+                ID: {{ curMail.id }}
+              </n-tag>
+              <n-tag type="info">
+                {{ `${curMail.created_at} UTC` }}
+              </n-tag>
+              <n-tag type="info">
+                FROM: {{ curMail.address }}
+              </n-tag>
+              <n-tag type="info">
+                TO: {{ curMail.to_mail }}
+              </n-tag>
+              <n-button size="small" tertiary type="info" @click="showCode = !showCode">
+                {{ t('showCode') }}
+              </n-button>
+              <n-popconfirm v-if="enableUserDeleteEmail" @positive-click="deleteMail">
+                <template #trigger>
+                  <n-button tertiary type="error" size="small">{{ t('delete') }}</n-button>
+                </template>
+                {{ t('deleteMailTip') }}
+              </n-popconfirm>
+            </n-space>
+            <pre v-if="showCode" style="margin-top: 10px;">{{ curMail.raw }}</pre>
+            <pre v-else-if="!curMail.is_html" style="margin-top: 10px;">{{ curMail.content }}</pre>
+            <div v-else v-html="curMail.content" style="margin-top: 10px;"></div>
+          </n-card>
+          <n-card :bordered="false" embedded class="mail-item" v-else>
+            <n-result status="info" :title="t('pleaseSelectMail')">
+            </n-result>
+          </n-card>
+        </template>
+      </n-split>
+    </div>
     <div class="left" v-else>
       <div class="center">
         <div style="display: inline-block; margin-right: 10px;">
@@ -210,7 +336,7 @@ onMounted(async () => {
       <n-drawer v-model:show="curMail" width="100%" placement="bottom" :trap-focus="false" :block-scroll="false"
         style="height: 80vh;">
         <n-drawer-content :title="curMail ? curMail.subject : ''" closable>
-          <n-card style="overflow: auto;">
+          <n-card :bordered="false" embedded style="overflow: auto;">
             <n-space>
               <n-tag type="info">
                 ID: {{ curMail.id }}
@@ -224,6 +350,15 @@ onMounted(async () => {
               <n-tag type="info">
                 TO: {{ curMail.to_mail }}
               </n-tag>
+              <n-button size="small" tertiary type="info" @click="showCode = !showCode">
+                {{ t('showCode') }}
+              </n-button>
+              <n-popconfirm v-if="enableUserDeleteEmail" @positive-click="deleteMail">
+                <template #trigger>
+                  <n-button tertiary type="error" size="small">{{ t('delete') }}</n-button>
+                </template>
+                {{ t('deleteMailTip') }}
+              </n-popconfirm>
             </n-space>
             <pre v-if="showCode" style="margin-top: 10px;">{{ curMail.raw }}</pre>
             <pre v-else-if="!curMail.is_html" style="margin-top: 10px;">{{ curMail.content }}</pre>
diff --git a/frontend/src/views/Index.vue b/frontend/src/views/Index.vue
index 8f4fdec5..3b7b64ac 100644
--- a/frontend/src/views/Index.vue
+++ b/frontend/src/views/Index.vue
@@ -51,6 +51,10 @@ const deleteMail = async (curMailId) => {
   await api.fetch(`/api/mails/${curMailId}`, { method: 'DELETE' });
 };
 
+const deleteSenboxMail = async (curMailId) => {
+  await api.fetch(`/api/sendbox/${curMailId}`, { method: 'DELETE' });
+};
+
 const fetchSenboxData = async (limit, offset) => {
   return await api.fetch(`/api/sendbox?limit=${limit}&offset=${offset}`);
 };
@@ -86,7 +90,8 @@ const saveToS3 = async (mail_id, filename, blob) => {
           :deleteMail="deleteMail" />
       </n-tab-pane>
       <n-tab-pane name="sendbox" :tab="t('sendbox')">
-        <SendBox :fetchMailData="fetchSenboxData" />
+        <SendBox :fetchMailData="fetchSenboxData" :enableUserDeleteEmail="openSettings.enableUserDeleteEmail"
+          :deleteMail="deleteSenboxMail" />
       </n-tab-pane>
       <n-tab-pane name="sendmail" :tab="t('sendmail')">
         <SendMail />
diff --git a/frontend/src/views/admin/Account.vue b/frontend/src/views/admin/Account.vue
index 8e2dc430..f229644d 100644
--- a/frontend/src/views/admin/Account.vue
+++ b/frontend/src/views/admin/Account.vue
@@ -268,7 +268,7 @@ onMounted(async () => {
             <span>
                 <p>{{ t("addressCredentialTip") }}</p>
             </span>
-            <n-card>
+            <n-card :bordered="false" embedded>
                 <b>{{ curEmailCredential }}</b>
             </n-card>
             <template #action>
@@ -296,7 +296,7 @@ onMounted(async () => {
                 </template>
             </n-pagination>
         </div>
-        <n-data-table :columns="columns" :data="data" :bordered="false" />
+        <n-data-table :columns="columns" :data="data" :bordered="false" embedded />
     </div>
 </template>
 
diff --git a/frontend/src/views/admin/AccountSettings.vue b/frontend/src/views/admin/AccountSettings.vue
index 22785a43..aa7397fb 100644
--- a/frontend/src/views/admin/AccountSettings.vue
+++ b/frontend/src/views/admin/AccountSettings.vue
@@ -68,7 +68,7 @@ onMounted(async () => {
 
 <template>
     <div class="center">
-        <n-card style="max-width: 600px;">
+        <n-card :bordered="false" embedded style="max-width: 600px;">
             <n-form-item-row :label="t('address_block_list')">
                 <n-select v-model:value="addressBlockList" filterable multiple tag
                     :placeholder="t('address_block_list_placeholder')" />
diff --git a/frontend/src/views/admin/CreateAccount.vue b/frontend/src/views/admin/CreateAccount.vue
index 9b7fb54e..88698d1a 100644
--- a/frontend/src/views/admin/CreateAccount.vue
+++ b/frontend/src/views/admin/CreateAccount.vue
@@ -71,11 +71,11 @@ onMounted(async () => {
     <div class="center">
         <n-modal v-model:show="showReultModal" preset="dialog" :title="t('addressCredential')">
             <p>{{ t('addressCredential') }}</p>
-            <n-card>
+            <n-card :bordered="false" embedded>
                 <b>{{ result }}</b>
             </n-card>
         </n-modal>
-        <n-card style="max-width: 600px;">
+        <n-card :bordered="false" embedded style="max-width: 600px;">
             <n-form-item-row v-if="openSettings.prefix" :label="t('enablePrefix')">
                 <n-checkbox v-model:checked="enablePrefix" />
             </n-form-item-row>
diff --git a/frontend/src/views/admin/Mails.vue b/frontend/src/views/admin/Mails.vue
index b2570997..2950100c 100644
--- a/frontend/src/views/admin/Mails.vue
+++ b/frontend/src/views/admin/Mails.vue
@@ -48,6 +48,10 @@ const fetchMailData = async (limit, offset) => {
     );
 }
 
+const deleteMail = async (curMailId) => {
+    await api.fetch(`/admin/mails/${curMailId}`, { method: 'DELETE' });
+};
+
 onMounted(async () => {
     if (!adminAuth.value) {
         showAdminAuth.value = true;
@@ -66,6 +70,7 @@ onMounted(async () => {
             </n-button>
         </n-input-group>
         <div style="margin-top: 10px;"></div>
-        <MailBox :key="mailBoxKey" :enableUserDeleteEmail="false" :fetchMailData="fetchMailData" />
+        <MailBox :key="mailBoxKey" :enableUserDeleteEmail="true" :fetchMailData="fetchMailData"
+            :deleteMail="deleteMail" />
     </div>
 </template>
diff --git a/frontend/src/views/admin/MailsUnknow.vue b/frontend/src/views/admin/MailsUnknow.vue
index b134ecbf..0ffb6d4c 100644
--- a/frontend/src/views/admin/MailsUnknow.vue
+++ b/frontend/src/views/admin/MailsUnknow.vue
@@ -15,6 +15,10 @@ const fetchMailUnknowData = async (limit, offset) => {
     );
 }
 
+const deleteMail = async (curMailId) => {
+    await api.fetch(`/api/mails/${curMailId}`, { method: 'DELETE' });
+};
+
 onMounted(async () => {
     if (!adminAuth.value) {
         showAdminAuth.value = true;
@@ -25,6 +29,6 @@ onMounted(async () => {
 
 <template>
     <div v-if="adminAuth" style="margin-top: 10px;">
-        <MailBox :enableUserDeleteEmail="false" :fetchMailData="fetchMailUnknowData" />
+        <MailBox :enableUserDeleteEmail="true" :fetchMailData="fetchMailUnknowData" :deleteMail="deleteMail" />
     </div>
 </template>
diff --git a/frontend/src/views/admin/Maintenance.vue b/frontend/src/views/admin/Maintenance.vue
index 98b00a84..0067cd04 100644
--- a/frontend/src/views/admin/Maintenance.vue
+++ b/frontend/src/views/admin/Maintenance.vue
@@ -91,8 +91,8 @@ onMounted(async () => {
 
 <template>
     <div class="center">
-        <n-card>
-            <n-alert :show-icon="false">
+        <n-card :bordered="false" embedded>
+            <n-alert :show-icon="false" :bordered="false">
                 <span>{{ t('cronTip') }}</span>
             </n-alert>
             <n-form :model="cleanupModel">
diff --git a/frontend/src/views/admin/SendBox.vue b/frontend/src/views/admin/SendBox.vue
index 35ffcbb9..96078ea4 100644
--- a/frontend/src/views/admin/SendBox.vue
+++ b/frontend/src/views/admin/SendBox.vue
@@ -26,6 +26,10 @@ const fetchData = async (limit, offset) => {
         + (adminSendBoxTabAddress.value ? `&address=${adminSendBoxTabAddress.value}` : '')
     );
 }
+
+const deleteSenboxMail = async (curMailId) => {
+    await api.fetch(`/admin/sendbox/${curMailId}`, { method: 'DELETE' });
+};
 </script>
 
 <template>
@@ -36,7 +40,8 @@ const fetchData = async (limit, offset) => {
                 {{ t('query') }}
             </n-button>
         </n-input-group>
-        <SendBox style="margin-top: 10px;" :fetchMailData="fetchData" :showEMailFrom="true" />
+        <SendBox style="margin-top: 10px;" :enableUserDeleteEmail="true" :deleteMail="deleteSenboxMail"
+            :fetchMailData="fetchData" :showEMailFrom="true" />
     </div>
 </template>
 
diff --git a/frontend/src/views/admin/SenderAccess.vue b/frontend/src/views/admin/SenderAccess.vue
index c67ac699..d69de526 100644
--- a/frontend/src/views/admin/SenderAccess.vue
+++ b/frontend/src/views/admin/SenderAccess.vue
@@ -17,6 +17,8 @@ const { t } = useI18n({
       enable: 'Enable',
       disable: 'Disable',
       modify: 'Modify',
+      delete: 'Delete',
+      deleteTip: 'Are you sure to delete this?',
       created_at: 'Created At',
       action: 'Action',
       itemCount: 'itemCount',
@@ -32,6 +34,8 @@ const { t } = useI18n({
       enable: '启用',
       disable: '禁用',
       modify: '修改',
+      delete: '删除',
+      deleteTip: '确定删除吗？',
       created_at: '创建时间',
       action: '操作',
       itemCount: '总数',
@@ -134,7 +138,25 @@ const columns = [
             }
           },
           { default: () => t('modify') }
-        )
+        ),
+        h(NPopconfirm,
+          {
+            onPositiveClick: async () => {
+              await api.fetch(`/admin/address_sender/${row.id}`, { method: 'DELETE' });
+              await fetchData();
+            }
+          },
+          {
+            trigger: () => h(NButton,
+              {
+                tertiary: true,
+                type: "error",
+              },
+              { default: () => t('delete') }
+            ),
+            default: () => t('deleteTip')
+          }
+        ),
       ])
     }
   }
@@ -183,7 +205,7 @@ onMounted(async () => {
         </template>
       </n-pagination>
     </div>
-    <n-data-table :columns="columns" :data="data" :bordered="false" />
+    <n-data-table :columns="columns" :data="data" :bordered="false" embedded />
   </div>
 </template>
 
diff --git a/frontend/src/views/admin/Statistics.vue b/frontend/src/views/admin/Statistics.vue
index 808be157..5ad84454 100644
--- a/frontend/src/views/admin/Statistics.vue
+++ b/frontend/src/views/admin/Statistics.vue
@@ -58,7 +58,7 @@ onMounted(async () => {
 </script>
 
 <template>
-    <n-card>
+    <n-card :bordered="false" embedded>
         <n-row>
             <n-col :span="6">
                 <n-statistic :label="t('userCount')" :value="statistics.userCount">
diff --git a/frontend/src/views/admin/Telegram.vue b/frontend/src/views/admin/Telegram.vue
index c3f10ccb..eb947ed8 100644
--- a/frontend/src/views/admin/Telegram.vue
+++ b/frontend/src/views/admin/Telegram.vue
@@ -112,8 +112,8 @@ onMounted(async () => {
 
 <template>
     <div class="center">
-        <n-card style="max-width: 800px; overflow: auto;">
-            <n-card>
+        <n-card :bordered="false" embedded style="max-width: 800px; overflow: auto;">
+            <n-card :bordered="false" embedded>
                 <n-form-item-row :label="t('enableTelegramAllowList')">
                     <n-input-group>
                         <n-checkbox v-model:checked="settings.enableAllowList" style="width: 20%;">
diff --git a/frontend/src/views/admin/UserManagement.vue b/frontend/src/views/admin/UserManagement.vue
index f711e676..9b1a4633 100644
--- a/frontend/src/views/admin/UserManagement.vue
+++ b/frontend/src/views/admin/UserManagement.vue
@@ -276,7 +276,7 @@ onMounted(async () => {
                 </template>
             </n-pagination>
         </div>
-        <n-data-table :columns="columns" :data="data" :bordered="false" />
+        <n-data-table :columns="columns" :data="data" :bordered="false" embedded />
     </div>
 </template>
 
diff --git a/frontend/src/views/admin/UserSettings.vue b/frontend/src/views/admin/UserSettings.vue
index 93b66e20..cb59bd09 100644
--- a/frontend/src/views/admin/UserSettings.vue
+++ b/frontend/src/views/admin/UserSettings.vue
@@ -82,7 +82,7 @@ onMounted(async () => {
 
 <template>
     <div class="center">
-        <n-card style="max-width: 600px;">
+        <n-card :bordered="false" embedded style="max-width: 600px;">
             <n-form :model="userSettings">
                 <n-form-item-row :label="t('enableUserRegister')">
                     <n-checkbox v-model:checked="userSettings.enable" />
diff --git a/frontend/src/views/admin/Webhook.vue b/frontend/src/views/admin/Webhook.vue
index 0f3bb3f4..2fce6a7f 100644
--- a/frontend/src/views/admin/Webhook.vue
+++ b/frontend/src/views/admin/Webhook.vue
@@ -62,7 +62,7 @@ onMounted(async () => {
 
 <template>
     <div class="center">
-        <n-card style="max-width: 800px; overflow: auto;">
+        <n-card :bordered="false" embedded style="max-width: 800px; overflow: auto;">
             <n-form-item-row :label="t('webhookAllowList')">
                 <n-select v-model:value="webhookSettings.allowList" filterable multiple tag
                     :placeholder="t('webhookAllowList')" />
diff --git a/frontend/src/views/common/About.vue b/frontend/src/views/common/About.vue
index cd77c819..4a7dc2d8 100644
--- a/frontend/src/views/common/About.vue
+++ b/frontend/src/views/common/About.vue
@@ -4,7 +4,7 @@ import { GithubAlt, Discord, Telegram } from '@vicons/fa'
 
 <template>
     <div class="center">
-        <n-card>
+        <n-card :bordered="false" embedded>
             <n-button tag="a" target="_blank" href="https://github.com/dreamhunter2333/cloudflare_temp_email">
                 <template #icon>
                     <n-icon :component="GithubAlt" />
diff --git a/frontend/src/views/common/AdminContact.vue b/frontend/src/views/common/AdminContact.vue
index ed3fedde..517731e9 100644
--- a/frontend/src/views/common/AdminContact.vue
+++ b/frontend/src/views/common/AdminContact.vue
@@ -16,7 +16,7 @@ const { t } = useI18n({
 </script>
 
 <template>
-    <n-alert v-if="openSettings.adminContact" :show-icon="false">
+    <n-alert v-if="openSettings.adminContact" :show-icon="false" :bordered="false">
         <span>{{ t('adminContact', { msg: openSettings.adminContact }) }}</span>
     </n-alert>
 </template>
diff --git a/frontend/src/views/common/Appearance.vue b/frontend/src/views/common/Appearance.vue
index c2287ad3..f12acb2d 100644
--- a/frontend/src/views/common/Appearance.vue
+++ b/frontend/src/views/common/Appearance.vue
@@ -40,7 +40,7 @@ const { t } = useI18n({
 
 <template>
     <div class="center">
-        <n-card>
+        <n-card :bordered="false" embedded>
             <n-form-item-row v-if="!isMobile" :label="t('mailboxSplitSize')">
                 <n-slider v-model:value="mailboxSplitSize" :min="0.25" :max="0.75" :step="0.01" :marks="{
                     0.25: '0.25',
diff --git a/frontend/src/views/common/Login.vue b/frontend/src/views/common/Login.vue
index 28acd8e9..0f3ead5d 100644
--- a/frontend/src/views/common/Login.vue
+++ b/frontend/src/views/common/Login.vue
@@ -150,7 +150,7 @@ onMounted(async () => {
 
 <template>
     <div>
-        <n-alert v-if="userSettings.user_email" :show-icon="false" closable>
+        <n-alert v-if="userSettings.user_email" :show-icon="false" :bordered="false" closable>
             <span>{{ t('bindUserInfo') }}</span>
         </n-alert>
         <n-tabs v-model:value="tabValue" size="large" justify-content="space-evenly">
@@ -206,7 +206,7 @@ onMounted(async () => {
                 </n-spin>
             </n-tab-pane>
             <n-tab-pane name="help" :tab="t('help')">
-                <n-alert :show-icon="false">
+                <n-alert :show-icon="false" :bordered="false">
                     <span>{{ t('pleaseGetNewEmail') }}</span>
                 </n-alert>
                 <AdminContact />
diff --git a/frontend/src/views/index/AccountSettings.vue b/frontend/src/views/index/AccountSettings.vue
index 2b9261ea..fa641848 100644
--- a/frontend/src/views/index/AccountSettings.vue
+++ b/frontend/src/views/index/AccountSettings.vue
@@ -59,7 +59,7 @@ const deleteAccount = async () => {
 
 <template>
     <div class="center" v-if="settings.address">
-        <n-card>
+        <n-card :bordered="false" embedded>
             <Appearance />
             <n-button @click="showAddressCredential = true" type="primary" secondary block strong>
                 {{ t('showAddressCredential') }}
diff --git a/frontend/src/views/index/AddressBar.vue b/frontend/src/views/index/AddressBar.vue
index 17bfdf7b..67d22612 100644
--- a/frontend/src/views/index/AddressBar.vue
+++ b/frontend/src/views/index/AddressBar.vue
@@ -84,11 +84,11 @@ onMounted(async () => {
 
 <template>
     <div>
-        <n-card v-if="!settings.fetched">
+        <n-card :bordered="false" embedded v-if="!settings.fetched">
             <n-skeleton style="height: 50vh" />
         </n-card>
         <div v-else-if="settings.address">
-            <n-alert type="info" :show-icon="false">
+            <n-alert type="info" :show-icon="false" :bordered="false">
                 <span>
                     <b>{{ addressLabel }}</b>
                     <n-button v-if="isTelegram" style="margin-left: 10px" @click="showTelegramChangeAddress = true"
@@ -113,8 +113,8 @@ onMounted(async () => {
             <TelegramAddress />
         </div>
         <div v-else class="center">
-            <n-card style="max-width: 600px;">
-                <n-alert v-if="jwt" type="warning" :show-icon="false" closable>
+            <n-card :bordered="false" embedded style="max-width: 600px;">
+                <n-alert v-if="jwt" type="warning" :show-icon="false" :bordered="false" closable>
                     <span>{{ t('fetchAddressError') }}</span>
                 </n-alert>
                 <Login />
@@ -140,7 +140,7 @@ onMounted(async () => {
             <span>
                 <p>{{ t("addressCredentialTip") }}</p>
             </span>
-            <n-card>
+            <n-card :bordered="false" embedded>
                 <b>{{ jwt }}</b>
             </n-card>
         </n-modal>
diff --git a/frontend/src/views/index/Attachment.vue b/frontend/src/views/index/Attachment.vue
index 067c7ac6..90d6085e 100644
--- a/frontend/src/views/index/Attachment.vue
+++ b/frontend/src/views/index/Attachment.vue
@@ -86,6 +86,6 @@ onMounted(async () => {
                 {{ t('download') }}
             </n-button>
         </n-modal>
-        <n-data-table :columns="columns" :data="data" :bordered="false" />
+        <n-data-table :columns="columns" :data="data" :bordered="false" embedded />
     </div>
 </template>
diff --git a/frontend/src/views/index/AutoReply.vue b/frontend/src/views/index/AutoReply.vue
index 8ddbc678..af4aafc8 100644
--- a/frontend/src/views/index/AutoReply.vue
+++ b/frontend/src/views/index/AutoReply.vue
@@ -81,7 +81,7 @@ onMounted(async () => {
 
 <template>
     <div class="center">
-        <n-card v-if="settings.address" :title='t("settings")'>
+        <n-card :bordered="false" embedded v-if="settings.address" :title='t("settings")'>
             <div class="right">
                 <n-button type="primary" @click="saveData">{{ t('save') }}</n-button>
             </div>
diff --git a/frontend/src/views/index/LocalAddress.vue b/frontend/src/views/index/LocalAddress.vue
index 7c9ddb3f..e7521ac4 100644
--- a/frontend/src/views/index/LocalAddress.vue
+++ b/frontend/src/views/index/LocalAddress.vue
@@ -144,12 +144,12 @@ const columns = [
 
 <template>
     <div>
-        <n-alert type="warning" :show-icon="false">
+        <n-alert type="warning" :show-icon="false" :bordered="false">
             <span>{{ t('tip') }}</span>
         </n-alert>
         <n-tabs type="segment" v-model:value="tabValue">
             <n-tab-pane name="address" :tab="t('address')">
-                <n-data-table :columns="columns" :data="data" :bordered="false" />
+                <n-data-table :columns="columns" :data="data" :bordered="false" embedded />
             </n-tab-pane>
             <n-tab-pane name="bind" :tab="t('bind')">
                 <Login :bindUserAddress="bindAddress" />
diff --git a/frontend/src/views/index/SendMail.vue b/frontend/src/views/index/SendMail.vue
index 54dce3f8..da14a4d7 100644
--- a/frontend/src/views/index/SendMail.vue
+++ b/frontend/src/views/index/SendMail.vue
@@ -142,9 +142,9 @@ onMounted(async () => {
 
 <template>
     <div class="center" v-if="settings.address">
-        <n-card>
+        <n-card :bordered="false" embedded>
             <div v-if="!settings.send_balance || settings.send_balance <= 0">
-                <n-alert type="warning" :show-icon="false">
+                <n-alert type="warning" :show-icon="false" :bordered="false">
                     {{ t('requestAccessTip') }}
                     <n-button type="primary" tertiary @click="requestAccess" size="small">{{ t('requestAccess')
                         }}</n-button>
@@ -153,7 +153,7 @@ onMounted(async () => {
                 <AdminContact />
             </div>
             <div v-else>
-                <n-alert type="info" :show-icon="false">
+                <n-alert type="info" :show-icon="false" :bordered="false">
                     {{ t('send_balance') }}: {{ settings.send_balance }}
                 </n-alert>
                 <div class="right">
@@ -187,7 +187,7 @@ onMounted(async () => {
                             </n-button>
                         </n-form-item>
                         <n-form-item :label="t('content')" label-placement="top">
-                            <n-card v-if="isPreview">
+                            <n-card :bordered="false" embedded v-if="isPreview">
                                 <div v-html="sendMailModel.content" />
                             </n-card>
                             <div v-else-if="sendMailModel.contentType == 'rich'" style="border: 1px solid #ccc">
diff --git a/frontend/src/views/index/TelegramAddress.vue b/frontend/src/views/index/TelegramAddress.vue
index ee736969..fdcc15c1 100644
--- a/frontend/src/views/index/TelegramAddress.vue
+++ b/frontend/src/views/index/TelegramAddress.vue
@@ -148,7 +148,7 @@ onMounted(async () => {
     <div>
         <n-tabs type="segment">
             <n-tab-pane name="address" :tab="t('address')">
-                <n-data-table :columns="columns" :data="data" :bordered="false" />
+                <n-data-table :columns="columns" :data="data" :bordered="false" embedded />
             </n-tab-pane>
             <n-tab-pane name="bind" :tab="t('bind')">
                 <Login :newAddressPath="newAddressPath" :bindUserAddress="bindAddress" />
diff --git a/frontend/src/views/index/Webhook.vue b/frontend/src/views/index/Webhook.vue
index 7e61f251..77117ed9 100644
--- a/frontend/src/views/index/Webhook.vue
+++ b/frontend/src/views/index/Webhook.vue
@@ -89,7 +89,7 @@ onMounted(async () => {
 
 <template>
     <div class="center" v-if="settings.address">
-        <n-card v-if="enableWebhook" style="max-width: 800px; overflow: auto;">
+        <n-card :bordered="false" embedded v-if="enableWebhook" style="max-width: 800px; overflow: auto;">
             <n-form-item-row label="URL">
                 <n-input v-model:value="webhookSettings.url" />
             </n-form-item-row>
diff --git a/frontend/src/views/telegram/Mail.vue b/frontend/src/views/telegram/Mail.vue
index 196b44a4..14d0a8bd 100644
--- a/frontend/src/views/telegram/Mail.vue
+++ b/frontend/src/views/telegram/Mail.vue
@@ -41,7 +41,7 @@ onMounted(async () => {
 
 <template>
     <div class="center">
-        <n-card v-if="curMail.message" style="max-width: 800px; overflow: auto;">
+        <n-card :bordered="false" embedded v-if="curMail.message" style="max-width: 800px; overflow: auto;">
             <n-tag type="info">
                 ID: {{ curMail.id }}
             </n-tag>
diff --git a/frontend/src/views/user/AddressManagement.vue b/frontend/src/views/user/AddressManagement.vue
index c5e70a20..d0b361df 100644
--- a/frontend/src/views/user/AddressManagement.vue
+++ b/frontend/src/views/user/AddressManagement.vue
@@ -165,6 +165,6 @@ onMounted(async () => {
 
 <template>
     <div>
-        <n-data-table :columns="columns" :data="data" :bordered="false" />
+        <n-data-table :columns="columns" :data="data" :bordered="false" embedded />
     </div>
 </template>
diff --git a/frontend/src/views/user/BindAddress.vue b/frontend/src/views/user/BindAddress.vue
index b4cd94c0..42a1d57a 100644
--- a/frontend/src/views/user/BindAddress.vue
+++ b/frontend/src/views/user/BindAddress.vue
@@ -29,7 +29,7 @@ onMounted(async () => {
 
 <template>
     <div class="center" v-if="userSettings.user_email">
-        <n-card style="max-width: 600px;">
+        <n-card :bordered="false" embedded style="max-width: 600px;">
             <Login />
         </n-card>
     </div>
diff --git a/frontend/src/views/user/UserBar.vue b/frontend/src/views/user/UserBar.vue
index c3a29e54..e4663c00 100644
--- a/frontend/src/views/user/UserBar.vue
+++ b/frontend/src/views/user/UserBar.vue
@@ -37,19 +37,19 @@ onMounted(async () => {
 
 <template>
     <div>
-        <n-card v-if="!userSettings.fetched">
+        <n-card :bordered="false" embedded v-if="!userSettings.fetched">
             <n-skeleton style="height: 50vh" />
         </n-card>
         <div v-else-if="userSettings.user_email">
-            <n-alert type="success" :show-icon="false">
+            <n-alert type="success" :show-icon="false" :bordered="false">
                 <span>
                     <b>{{ t('currentUser') }} <b>{{ userSettings.user_email }}</b></b>
                 </span>
             </n-alert>
         </div>
         <div v-else class="center">
-            <n-card style="max-width: 600px;">
-                <n-alert v-if="userJwt" type="warning" :show-icon="false" closable>
+            <n-card :bordered="false" embedded style="max-width: 600px;">
+                <n-alert v-if="userJwt" type="warning" :show-icon="false" :bordered="false" closable>
                     <span>{{ t('fetchUserSettingsError') }}</span>
                 </n-alert>
                 <UserLogin />
diff --git a/frontend/src/views/user/UserLogin.vue b/frontend/src/views/user/UserLogin.vue
index e12a7e4c..60c0665d 100644
--- a/frontend/src/views/user/UserLogin.vue
+++ b/frontend/src/views/user/UserLogin.vue
@@ -228,7 +228,7 @@ onMounted(async () => {
                     {{ t('resetPassword') }}
                 </n-button>
             </n-form>
-            <n-alert v-else :show-icon="false">
+            <n-alert v-else :show-icon="false" :bordered="false">
                 <span>
                     {{ t('cannotForgotPassword') }}
                 </span>
diff --git a/frontend/src/views/user/UserSettings.vue b/frontend/src/views/user/UserSettings.vue
index 353c2188..beecc81e 100644
--- a/frontend/src/views/user/UserSettings.vue
+++ b/frontend/src/views/user/UserSettings.vue
@@ -43,8 +43,8 @@ onMounted(async () => {
 
 <template>
     <div class="center" v-if="userSettings.user_email">
-        <n-card>
-            <n-alert :show-icon="false">
+        <n-card :bordered="false" embedded>
+            <n-alert :show-icon="false" :bordered="false">
                 <span>
                     {{ t('passordTip') }}
                 </span>
diff --git a/vitepress-docs/docs/.vitepress/zh.ts b/vitepress-docs/docs/.vitepress/zh.ts
index bee25f39..156bf505 100644
--- a/vitepress-docs/docs/.vitepress/zh.ts
+++ b/vitepress-docs/docs/.vitepress/zh.ts
@@ -100,7 +100,6 @@ function sidebarGuide(): DefaultTheme.SidebarItem[] {
             items: [
                 { text: '命令行部署准备', link: 'cli/pre-requisite' },
                 { text: 'D1 数据库', link: 'cli/d1' },
-                { text: '配置 DKIM', link: 'dkim' },
                 { text: 'Cloudflare workers 后端', link: 'cli/worker' },
                 { text: '配置邮件转发', link: 'email-routing.md' },
                 { text: 'Cloudflare Pages 前端', link: 'cli/pages' },
@@ -112,7 +111,6 @@ function sidebarGuide(): DefaultTheme.SidebarItem[] {
             collapsed: true,
             items: [
                 { text: 'D1 数据库', link: 'ui/d1' },
-                { text: '配置 DKIM', link: 'dkim' },
                 { text: 'Cloudflare workers 后端', link: 'ui/worker' },
                 { text: '配置邮件转发', link: 'email-routing.md' },
                 { text: 'Cloudflare Pages 前端', link: 'ui/pages' },
diff --git a/vitepress-docs/docs/en/cli.md b/vitepress-docs/docs/en/cli.md
index ffa5c4e0..fc7824c6 100644
--- a/vitepress-docs/docs/en/cli.md
+++ b/vitepress-docs/docs/en/cli.md
@@ -105,9 +105,6 @@ ENABLE_AUTO_REPLY = false
 # Turnstile verification configuration
 # CF_TURNSTILE_SITE_KEY = ""
 # CF_TURNSTILE_SECRET_KEY = ""
-# dkim config
-# DKIM_SELECTOR = "mailchannels" # Refer to the DKIM section mailchannels._domainkey for mailchannels
-# DKIM_PRIVATE_KEY = "" # Refer to the contents of priv_key.txt in the DKIM section
 # telegram bot
 # TG_MAX_ACCOUNTS = 5
 # global forward address list, if set, all emails will be forwarded to these addresses
@@ -159,39 +156,3 @@ pnpm run deploy
 ```
 
 ![pages](/readme_assets/pages.png)
-
-## Configure sending emails
-
-Find the `SPF` record of `TXT` in the domain name `DNS` record, and add `include:relay.mailchannels.net`
-
-```bash
-v=spf1 include:_spf.mx.cloudflare.net include:relay.mailchannels.net ~all
-```
-
-Create a new `_mailchannels` record, the type is `TXT`, the content is `v=mc1 cfid=your worker domain name`
-
-- The worker domain name here is the domain name of the back-end api. For example, if I deploy it at `https://temp-email-api.awsl.uk/`, fill in `v=mc1 cfid=awsl.uk`
-- If your domain name is `https://temp-email-api.xxx.workers.dev`, fill in `v=mc1 cfid=xxx.workers.dev`
-
-## Configure DKIM
-
-Ref: [Adding-a-DKIM-Signature](https://support.mailchannels.com/hc/en-us/articles/7122849237389-Adding-a-DKIM-Signature)
-
-Creating a DKIM private and public key:
-Private key as PEM file and base64 encoded txt file:
-
-```bash
-openssl genrsa 2048 | tee priv_key.pem | openssl rsa -outform der | openssl base64 -A > priv_key.txt
-```
-
-Public key as DNS record:
-
-```bash
-echo -n "v=DKIM1;p=" > pub_key_record.txt && \
-openssl rsa -in priv_key.pem -pubout -outform der | openssl base64 -A >> pub_key_record.txt
-```
-
-Add `TXT` record in `Cloudflare` all your mail domain `DNS`
-
-- `_dmarc`: `v=DMARC1; p=none; adkim=r; aspf=r;`
-- `mailchannels._domainkey`: `v=DKIM1; p=<content of the file pub_key_record.txt>`
diff --git a/vitepress-docs/docs/zh/guide/cli/worker.md b/vitepress-docs/docs/zh/guide/cli/worker.md
index ad988e43..75e3cd47 100644
--- a/vitepress-docs/docs/zh/guide/cli/worker.md
+++ b/vitepress-docs/docs/zh/guide/cli/worker.md
@@ -73,9 +73,6 @@ ENABLE_AUTO_REPLY = false
 # Turnstile 人机验证配置
 # CF_TURNSTILE_SITE_KEY = ""
 # CF_TURNSTILE_SECRET_KEY = ""
-# dkim config
-# DKIM_SELECTOR = "mailchannels" # 参考 DKIM 部分 mailchannels._domainkey 的 mailchannels
-# DKIM_PRIVATE_KEY = "" # 参考 DKIM 部分 priv_key.txt 的内容
 # telegram bot 最多绑定邮箱数量
 # TG_MAX_ACCOUNTS = 5
 # 全局转发地址列表，如果不配置则不启用，启用后所有邮件都会转发到列表中的地址
diff --git a/vitepress-docs/docs/zh/guide/config-send-mail.md b/vitepress-docs/docs/zh/guide/config-send-mail.md
index b448179d..b82c5115 100644
--- a/vitepress-docs/docs/zh/guide/config-send-mail.md
+++ b/vitepress-docs/docs/zh/guide/config-send-mail.md
@@ -23,19 +23,3 @@ wrangler secret put RESEND_TOKEN
 wrangler secret put RESEND_TOKEN_XXX_COM
 wrangler secret put RESEND_TOKEN_DREAMHUNTER2333_XYZ
 ```
-
-## 使用 mailchannels 发送邮件
-
-::: warning
-[Mail Channels 免费电子邮件发送 API 将于2024年6月30日结束](https://support.mailchannels.com/hc/en-us/articles/26814255454093-End-of-Life-Notice-Cloudflare-Workers)
-:::
-
-1. 找到域名 `DNS` 记录的 `TXT` 的 `SPF` 记录, 增加 `include:relay.mailchannels.net`
-
-    `v=spf1 include:_spf.mx.cloudflare.net include:relay.mailchannels.net ~all`
-
-2. 新建 `_mailchannels` 记录, 类型为 `TXT`, 内容为 `v=mc1 cfid=你的worker域名`
-
-- 此处 worker 域名为后端 api 的域名，比如我部署在 `https://temp-email-api.awsl.uk/`，则填写 `v=mc1 cfid=awsl.uk`
-
-- 如果你的域名是 `https://temp-email-api.xxx.workers.dev`，则填写 `v=mc1 cfid=xxx.workers.dev`
diff --git a/vitepress-docs/docs/zh/guide/dkim.md b/vitepress-docs/docs/zh/guide/dkim.md
deleted file mode 100644
index e4edbc06..00000000
--- a/vitepress-docs/docs/zh/guide/dkim.md
+++ /dev/null
@@ -1,33 +0,0 @@
-# 配置 DKIM
-
-如果你不想配置 DKIM，可以跳过这一节。
-
-参考: [Adding-a-DKIM-Signature](https://support.mailchannels.com/hc/en-us/articles/7122849237389-Adding-a-DKIM-Signature)
-
-Creating a DKIM private and public key:
-Private key as PEM file and base64 encoded txt file:
-
-```bash
-openssl genrsa 2048 | tee priv_key.pem | openssl rsa -outform der | openssl base64 -A > priv_key.txt
-```
-
-Public key as DNS record:
-
-```bash
-echo -n "v=DKIM1;p=" > pub_key_record.txt && \
-openssl rsa -in priv_key.pem -pubout -outform der | openssl base64 -A >> pub_key_record.txt
-```
-
-在 `Cloudflare` 的 `DNS` 记录中添加 `TXT` 记录
-
-例如:
-
-- `_dmarc`: `v=DMARC1; p=none; adkim=r; aspf=r;`
-- `mailchannels._domainkey`: `v=DKIM1; p=<content of the file pub_key_record.txt>`
-
-那我在 `wrangler.toml` 中的配置应该是这样的:
-
-```toml
-DKIM_SELECTOR = "mailchannels"
-DKIM_PRIVATE_KEY = "<priv_key.txt 的内容>"
-```
diff --git a/vitepress-docs/docs/zh/guide/feature/subdomain.md b/vitepress-docs/docs/zh/guide/feature/subdomain.md
index f8fb7acf..b07de2d9 100644
--- a/vitepress-docs/docs/zh/guide/feature/subdomain.md
+++ b/vitepress-docs/docs/zh/guide/feature/subdomain.md
@@ -1,5 +1,9 @@
 # 配置子域名邮箱
 
+::: warning
+子域名邮箱发送邮件可能无法发送邮件，建议使用主域名邮箱发送邮件，子域名邮箱仅用于接收邮件。
+:::
+
 参考
 
 - [配置子域名邮箱](https://github.com/dreamhunter2333/cloudflare_temp_email/issues/164#issuecomment-2082612710)
diff --git a/worker/src/admin_api/index.ts b/worker/src/admin_api/index.ts
index 80687f65..d5199e32 100644
--- a/worker/src/admin_api/index.ts
+++ b/worker/src/admin_api/index.ts
@@ -127,6 +127,16 @@ api.get('/admin/mails_unknow', async (c) => {
     );
 });
 
+api.delete('/admin/mails/:id', async (c) => {
+    const { id } = c.req.param();
+    const { success } = await c.env.DB.prepare(
+        `DELETE FROM raw_mails WHERE id = ? `
+    ).bind(id).run();
+    return c.json({
+        success: success
+    })
+})
+
 api.get('/admin/address_sender', async (c) => {
     const { address, limit, offset } = c.req.query();
     if (address) {
@@ -166,6 +176,16 @@ api.post('/admin/address_sender', async (c) => {
     })
 })
 
+api.delete('/admin/address_sender/:id', async (c) => {
+    const { id } = c.req.param();
+    const { success } = await c.env.DB.prepare(
+        `DELETE FROM address_sender WHERE id = ? `
+    ).bind(id).run();
+    return c.json({
+        success: success
+    })
+})
+
 api.get('/admin/sendbox', async (c) => {
     const { address, limit, offset } = c.req.query();
     if (address) {
@@ -182,6 +202,16 @@ api.get('/admin/sendbox', async (c) => {
     );
 })
 
+api.delete('/admin/sendbox/:id', async (c) => {
+    const { id } = c.req.param();
+    const { success } = await c.env.DB.prepare(
+        `DELETE FROM sendbox WHERE id = ? `
+    ).bind(id).run();
+    return c.json({
+        success: success
+    })
+})
+
 api.get('/admin/statistics', async (c) => {
     const { count: mailCount } = await c.env.DB.prepare(
         `SELECT count(*) as count FROM raw_mails`
diff --git a/worker/src/mails_api/send_mail_api.ts b/worker/src/mails_api/send_mail_api.ts
index b0712968..0ee56bf7 100644
--- a/worker/src/mails_api/send_mail_api.ts
+++ b/worker/src/mails_api/send_mail_api.ts
@@ -4,7 +4,7 @@ import { createMimeMessage } from 'mimetext';
 import { Resend } from 'resend';
 
 import { CONSTANTS } from '../constants'
-import { getJsonSetting, getDomains, getIntValue } from '../utils';
+import { getJsonSetting, getDomains, getIntValue, getBooleanValue } from '../utils';
 import { GeoData } from '../models'
 import { handleListQuery } from '../common'
 import { HonoCustomType } from '../types';
@@ -89,64 +89,6 @@ const sendMailByResend = async (
     console.log(`Resend success: ${JSON.stringify(data)}`);
 }
 
-const sendMailByMailChannels = async (
-    c: Context<HonoCustomType>, address: string,
-    reqJson: {
-        from_name: string, to_mail: string, to_name: string,
-        subject: string, content: string, is_html: boolean
-    }
-): Promise<void> => {
-    /* eslint-disable prefer-const */
-    let {
-        from_name, to_mail, to_name,
-        subject, content, is_html
-    } = reqJson;
-    /* eslint-enable prefer-const */
-    from_name = from_name || address;
-    to_name = to_name || to_mail;
-    let dmikBody = {}
-    if (c.env.DKIM_SELECTOR && c.env.DKIM_PRIVATE_KEY && address.includes("@")) {
-        dmikBody = {
-            "dkim_domain": address.split("@")[1],
-            "dkim_selector": c.env.DKIM_SELECTOR,
-            "dkim_private_key": c.env.DKIM_PRIVATE_KEY,
-        }
-    }
-    const body = {
-        "personalizations": [
-            {
-                "to": [{
-                    "email": to_mail,
-                    "name": to_name,
-                }],
-                ...dmikBody,
-            }
-        ],
-        "from": {
-            "email": address,
-            "name": from_name,
-        },
-        "subject": subject,
-        "content": [{
-            "type": is_html ? "text/html" : "text/plain",
-            "value": content,
-        }],
-    };
-    const send_request = new Request("https://api.mailchannels.net/tx/v1/send", {
-        "method": "POST",
-        "headers": {
-            "content-type": "application/json",
-        },
-        "body": JSON.stringify(body),
-    });
-    const resp = await fetch(send_request);
-    const respText = await resp.text();
-    console.log(resp.status + " " + resp.statusText + ": " + respText);
-    if (resp.status >= 300) {
-        throw new Error(`Mailchannels error: ${resp.status} ${respText}`);
-    }
-}
-
 export const sendMail = async (
     c: Context<HonoCustomType>, address: string,
     reqJson: {
@@ -208,9 +150,8 @@ export const sendMail = async (
     else if (resendEnabled) {
         await sendMailByResend(c, address, reqJson);
     }
-    // send by mailchannels
     else {
-        await sendMailByMailChannels(c, address, reqJson);
+        throw new Error("Please enable resend or verified address list")
     }
     // update balance
     if (!sendByVerifiedAddressList) {
@@ -292,3 +233,17 @@ api.get('/api/sendbox', async (c) => {
     const { limit, offset } = c.req.query();
     return getSendbox(c, address, limit, offset);
 })
+
+api.delete('/api/sendbox/:id', async (c) => {
+    if (!getBooleanValue(c.env.ENABLE_USER_DELETE_EMAIL)) {
+        return c.text("User delete email is disabled", 403)
+    }
+    const { address } = c.get("jwtPayload")
+    const { id } = c.req.param();
+    const { success } = await c.env.DB.prepare(
+        `DELETE FROM sendbox WHERE address = ? and id = ? `
+    ).bind(address, id).run();
+    return c.json({
+        success: success
+    })
+})
diff --git a/worker/src/types.d.ts b/worker/src/types.d.ts
index ed54c874..b523df9f 100644
--- a/worker/src/types.d.ts
+++ b/worker/src/types.d.ts
@@ -33,10 +33,6 @@ export type Bindings = {
     S3_BUCKET: string | undefined
     S3_URL_EXPIRES: number | undefined
 
-    // dkim
-    DKIM_SELECTOR: string | undefined
-    DKIM_PRIVATE_KEY: string | undefined
-
     // cf turnstile
     CF_TURNSTILE_SITE_KEY: string | undefined
     CF_TURNSTILE_SECRET_KEY: string | undefined
diff --git a/worker/wrangler.toml.template b/worker/wrangler.toml.template
index f82420a9..b71a48a9 100644
--- a/worker/wrangler.toml.template
+++ b/worker/wrangler.toml.template
@@ -47,9 +47,6 @@ ENABLE_AUTO_REPLY = false
 # Turnstile verification
 # CF_TURNSTILE_SITE_KEY = ""
 # CF_TURNSTILE_SECRET_KEY = ""
-# dkim config
-# DKIM_SELECTOR = ""
-# DKIM_PRIVATE_KEY = ""
 # telegram bot
 # TG_MAX_ACCOUNTS = 5
 # global forward address list, if set, all emails will be forwarded to these addresses