Apache SpamAssassin it's both an API and a program. In my installation, I do not use it to do any subject modifications and I use a milter called mime defang to do that using my own logic.
You can also configure spam d/Spam seed not to modify the subject. If you would like similar headings removed from spams though why email is getting multiple would be a question, patches are welcome for consideration. Regards, KAM On Tue, Nov 15, 2022, 07:01 Marc <m...@f1-outsourcing.eu> wrote: > > > > When a *user* replies it's not at the beginning > > it's "Re: **spam**" > > :) Indeed, and in other languages it is even different, but I think > developers get the point ;) >