Change action name/icon when "replying" to a message sent by yourself

[gunnarhaslinger]

When answering emails which was sent with an "Reply-To:" header the composed answer is addressed to the From: and not the Reply-To Address.

[cketti]

Works for me with the latest stable version (5.806) and the latest beta version (5.904).

Please provide the information asked for in the issue template and include (redacted) headers of the message you're replying to.

[gunnarhaslinger]

Thanks @cketti for your test and feedback.

I tested again and again, now found out which exact situation triggers the behavior.

I can confirm that K-9 Mail 5.904 usually respects the "Reply-To:" header and works as expected.

But there is a special situation where it does not:

My configured Mail-Address is gunnar@demo-domain.demo
If I get an email with following headers:
FROM: anybody@demo2-domain.demo
TO: anybody@demo2-domain.demo
Reply-To: gunnar@demo-domain.demo

and I hit the "Reply-to" button (or the "Reply-to-all" button) then the "Reply-To:" Address is not respected. So if the "Reply-To" address matches my own configured email-address which would practically lead to sending a Mail from me to myself, the "Reply-To:" is not respected and the mail is addressed to the "FROM:" address instead of using the "Reply-To" address.

So - this is not a typical situation, it was just my test-case of testing a form-mailer which led to this "special scenario". No idea why there is an other behavior in this situation and if this is a bug or if it is intentional.

K-9 Mail version: 5.904
Android version: 11
Device: Poco X3 Pro
Account type: IMAPS

[cketti]

Thanks 👍

It's not the From address that is used, it's the To address. This behavior is intentional (and was introduced in 2010). The same happens when replying to a message sent by yourself even when the message doesn't contain a Reply-To header.

According to the commit message that introduced the behavior, the idea is that the user most likely wants to send a message to the other party when replying to a message they sent themselves.
I agree that this is most likely what a user wants to do when e.g. tapping "reply" on a message in the Sent folder. But maybe we can make this less confusing by using a different icon and/or name for the action. This would be an addition to #3738.