This menu allows you to manage and do actions to mailbox via an IMAP or POP connection
For this type of connection we strongly recommend to use the IMAP over POP3 for security reasons.
In this menu you can handle you bounce mailbox and apply different rules to manage your subscribers.
In this second menu you can manage emails in a mailbox by forwarding them to a list or an email, subscribe or unsubscribe a subscriber.
This is a feature that was called distribution list in AcyMailing version 5.