Forwarding to Gmail via API

Mon, 07 Sep 2026 23:05:01 -0400

Google is deprecating, and will soon turn off, Gmail’s ability to fetch mail from other servers via POP. (Despite what you may have thought, Gmail has apparently never supported fetching over IMAP.) In an update, covered in the link above, Google has extended this deprecation to it’s send-as feature as well. So while this tool will still work, it won’t be possible to use your Gmail account as your primary interface to reading and responding to email at another domain. Forwarding by SMTP is not a good substitute: forwarded messages commonly fail SPF, DKIM, and DMARC checks, because the forwarding server is no longer an authorized sender for the original domain. (The ARC protocol exists to soften this, but it depends on the receiving side trusting you.) So I turned to Gmail’s API, and after a little more research than I wanted, I wrote a modest Python script.

Python on The Solutions Are Known

Forwarding to Gmail via API