Since i-mscp 1.0.1.5 dovecot can be used as the default IMAP/POP client.
At the moment i-mscp preserves the compatibility with courier, hence some features from dovecot are still not propagated to the interface.
There also some other features that where not considered to be needed for everyone.
The wiki page will focus on trying to help integrating the missing parts and to make easier for the users to use the enhancements that brings dovecot.
You can see the page here
At the moment the howto has these features:
.- Alias and subdomains can be used as a full mail domains
.- Global sieve rules