OK - this is a wild idea and wondering what it would take to make it possible.

I get a lot of email from a lot of different people about a lot of different issues. What I need is a way to do some server side presorting of email into specific folders. I can build a LOT of Mozilla rules but that is too cumbersome for what I have in mind.

Here's what I'm thinking - one classification of email is "customers" and what I want to do is to drag an email into the customers server side folder and once I do that then any incoming email that comes from that person goes into the customers folder.

I'm trying to envision how to code this and I think what I would need is if Dovecot were to create an external berkeley db file or mysql database of what is a list of email addresses contained in the folder that could be quickly searched for a match, that might do it. I think I could write a backent in Exim to handle it.

This idea isn't yet well though out. I'm just throwing it out there to see if it's feasable.

Thoughts?