Filter after the fact is planned, but hasn't happened yet. :-(
http://bugzilla.mozilla.org/show_bug.cgi?id=11033
Marco Manfredini wrote:
> I just moved to the Mozilla 0.93 mail client (plaudit at the end of
> message) and foisted him my mailing list mbox-files. Then, of course, I
> wrote the neccesary message filters and wanted to test them on the
> messages that arrived in the meantime. Suddenly I started feeling
> stupid, because I couldn't figure out how to apply the new rules to the
> /existing/ messages. I tried to delete the *.msf files, hoping that the
> client would refilter during msf-rebuild, but he didn't. Does anybody
> know more?
>
> praise:
>
> The 0.93 works great for me! I promise to switch back from Opera. But
> the great surprise for me is: the Mail Client! You don't know how I
> appreciate it that you stay with human-readable configuration files and
> the mbox format![1] I hope it works as well for my linux box.
>
> Thanks! Keep the good work on. [2]
>
> --
> Marco
>
> [1] Not like the shitty client we all know, where everything has to stay
> in binary files, which are invisibly connected with guids and registry
> entries, making it impossible to read the mail box for all times when
> the client mysteriously breaks and the reinstallation doesn't recognize
> the files anymore...
> [2] But understand that I can't go away from XNews :-)