Re: Forwarding email

[Ken Hornstein]

>If I forward to my iCloud account, it works.  If I forward to my
>Proton account wHat I get is an empty message with an attachment; the
>attachment consisting of a string of numbers@eddie.fios-router data 8 KB
>
>I have stumbled upon the fact that if I use MH-E within emacs I
>can forward in-line instead of as an attachment and that works.
>Unfortunately, I can't seem to find how to use nmh to forward in-line.

What does "forward in-line" mean, exactly?  "forw -mime" does not mark
it as an attachment; technically, it does not put a disposition at all.
It may be that Proton Mail sees a MIME message with a disposition
header as an attachment (disposition headers are optional; in theory
the MUA is allowed to do whatever it wants with it).

I believe that if you modify the forw line with a disposition, the right
thing will happen.  That would look like this:

#forw [forwarded message] {inline} ... rest of forw line

>Finally, using dist to send to the iCloud account works. Using dist to
>send to Proton fails with:
>
>Rejected due to unmatching envelope and header sender.

Sigh, THAT is completely wrong in that Proton Mail isn't looking at the
Resent-From header.  You could add an Envelope-From header to set the
Envelope from header to match the original message, but that will probably
fail some other anti-spam feature.

--Ken