Thank you for your new script! I think it will be the greatest email system around. Just want to ask some question on the mail handling part, as it is the most important thing for the web-mail service.
You had mentioned three methods:
1. All mail @youraddress.com goes to a catch all account.
2. POP/imap account.
3. Route mail directly into the program.

Which is the most secure method?
About 3, is there any document that talks about the direct route from sendmail and qmail to a application?

Also about the email system, can it handles several domains without serveral copies?

Thanks for your time!