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Actual delivery address is part of SMTP envelope, which is not part of delivered mail. While it usually correlates with headers in actual message, it is not req

by saba2008 5y ago

Actual delivery address is part of SMTP envelope, which is not part of delivered mail. While it usually correlates with headers in actual message, it is not required (that's how BCC works). https://en.wikipedia.org/wiki/Simple_Mail_Transfer_Protocol#SMTP_transport_example https://en.wikipedia.org/wiki/Simple_Mail_Transfer_Protocol#... See lines with 'RCTP TO'. That's where your address was.

pgn674 5y ago
Are there any (web) mail providers which will show you the SMTP envelope data along with the message headers? I have multiple addresses ending up in one inbox, and I'd like to see what RCPT TO the sender used.
- saba2008 5y ago
  Fastmail does put envelope address into 'X-Delivered-to' header, GMail puts it into 'Delivered-To'.