[Dovecot] How to replace /usr/bin/imapd in ssh

I have a command string

ssh dad@frank /usr/bin/imapd ./Maildir 2> /dev/null

that expects /usr/bin/imapd to exist to pass mail to the imap server but I can't find how to replicate the functionality in dovecot. Is it possible to wrapper dovecot to reproduce the functionality? Or is there another technique?

Lats