Post-migration questions

[Grant]

I just migrated from courier-imap to dovecot and dovecot is a lot
faster.  My only client is webmail on the same server as dovecot.  Max
~10 users.

Should I still run imapproxy like I did with courier?

Does dovecot periodically empty the trash folder like courier does?

I reduced the number of processes courier was running to save RAM and
improve performance.  Are there any performance tweaks I should
consider for dovecot?

- Grant