Fix: Set Message-Id and Date headers on outgoing emails#115
Merged
Wh1isper merged 2 commits intoai-zerolab:mainfrom Feb 14, 2026
Merged
Fix: Set Message-Id and Date headers on outgoing emails#115Wh1isper merged 2 commits intoai-zerolab:mainfrom
Wh1isper merged 2 commits intoai-zerolab:mainfrom
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Emails sent via the MCP server are missing Message-Id and Date headers. When using iCloud SMTP (and similar providers), these headers are assigned server-side during delivery, but they don't appear in the copy saved to the IMAP Sent folder via APPEND. This breaks email threading in clients like Apple Mail, which build the References chain from the Sent folder copy rather than the delivered message. Generate Message-Id (via email.utils.make_msgid) and Date (via email.utils.formatdate) headers on the message object before both sending via SMTP and saving to the Sent folder, so the same values appear in both copies.
Cover header presence and domain extraction from the sender address, and verify the same Message-Id and Date appear on both the SMTP-sent message and the returned object used for IMAP Sent folder saving.
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Problem:
Emails sent were missing Message-Id and Date headers. When using iCloud SMTP (and similar providers), these headers are assigned server-side during delivery, but they don't appear in the copy saved to the IMAP Sent folder. This breaks email threading in clients like Apple Mail, which build the References chain from the Sent folder copy rather than the delivered message.
Fix:
Generate Message-Id (via email.utils.make_msgid) and Date (via email.utils.formatdate) headers on the message object before both sending via SMTP and saving to the Sent folder. This ensures the same values appear in both copies.