- Plesk for Linux
Is it better to choose Dovecot or Courier IMAP?
According to Plesk documentation, Dovecot is more recommended as Dovecot is faster, more secure, and it consumes fewer server resources and provides support for server-side mail filtering rules.
However, the choice itself should be made based on the specific business needs. Both these services have features that may help to configure mail delivery more efficient depending on the business structure and server configuration.