[Dovecot] Multiple Maildirs per Virtual User

How would it be possible to configure dovecot (2.0.16) in such a way that it would serve several maildirs (e.g., INBOX, INBOX.Drafts, INBOX.Sent, forum_email, [Gmail].Trash, etc.) per virtual user?

I am only able to specify a single maildir, but I want all maildirs in /home/my-username/mail/account1/ to be served.

e.g., /etc/dovecot/passwd: my-username_account1:{PLAIN}password:my-username:my-group::::userdb_mail=maildir:/home/my-username/mail/account1/INBOX

Thanks in advance, Ruslan

-- Ruslan Nabioullin rnabioullin@gmail.com