If we're asking only custom flags (eg. APPEND), don't do any mailbox syncing.
If we're asking only custom flags (eg. APPEND), don't do any mailbox syncing.

damoxc/dovecot,LTD-Beget/dovecot,damoxc/dovecot,damoxc/dovecot,LTD-Beget/dovecot,damoxc/dovecot,Distrotech/dovecot,LTD-Beget/dovecot,Distrotech/dovecot,Distrotech/dovecot,Distrotech/dovecot,LTD-Beget/dovecot,damoxc/dovecot,Distrotech/dovecot,LTD-Beget/dovecot