Subdomains do not inherit Email Routing from the apex domain;
each subdomain must enable Email Routing and configure its own
DNS records and Catch-all rule.
Refs #969
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
* docs: restructure sidebar, expand FAQ, enhance send mail docs
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* docs: remove specific example domain reference in FAQ per review
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>