[Users] Adding a header to incoming/outgoing mail

[Ivan Krylov]

On Fri, 22 Jan 2021 11:02:37 +0100
Milan Obuch <claws-mail-users at dino.sk> wrote:

> If you are able to use server side filtering with message alteration,
> this is (relatively) easy.

That is, unfortunately, the case.
 
> I sent a mail to mailing list some time ago why I was not able to
> usePython plugin. If others are interested, I can share my work.

A Lua plugin sounds very interesting. Can we have a look at it?

-- 
Best regards,
Ivan