Hi.

Saw your post and I myself have been trying to figure out how to deal with allowing users to set up their own filters via a squirrelmail interface.

Problem you will run into is the protection scheme required for maildrop filters. IN particular, they can only be accessible by the straight user, which causes some problems for a php based solution.

One idea is simply to modify maildrop to relax the security requirements. That was going to be my way.

Don't know if there are any other suggestions. Once that is done, creating a php plugin for squirrelmail should be a "cinch".

Cheers.