Re: Sieve extension to expire mails?

> If so, how about message attributes to allow expiration to happen?
Nothing wrong with that. You could maintain messages in the users 
maildir (however you store them) and maintain information about 
thoses messages in a db, like sleepycat for instance. Relatively simple 
and cheap to read that db for messages that need to be expired and 
expire those that are due...

Rgds,
-GSH