How does its IMAP4 fare with ImapTest?<p><a href="https://dovecot.github.io/imaptest" rel="nofollow">https://dovecot.github.io/imaptest</a><p><a href="https://dovecot.github.io/imaptest/compliancy.html" rel="nofollow">https://dovecot.github.io/imaptest/compliancy.html</a>