that's what i was thinking- at some point in the future, somebody (maybe myself, if i ever get some free time) (yeah, right) will want to write a web interface which gives individual mailbox owners the ability to either edit their own .mailfilter file, or choose from a list of options which will cause the web back-end to create or modify a per-mailbox .mailfilter file, maybe using some kind of templates to support each available option.
sqwebmail provides some ability to generate .mailfilter files although the interface isn't the greatest.
There is also a module for squirrelmail too that generates .mailfilter files. However I had to make some changes before it would work properly.
