command line tool to manage email (alias-)domains/accounts/aliases …
vmm is the easy to use and configurable command line tool for administrators and postmasters, to manage domains, alias-domains, accounts and relocated mail users. It allows the fast and easy management of mail servers.
vmm is written in Python. It's designed for installations using Dovecot and Postfix with a PostgreSQL backend.
Korreio is GUI to mail systems management based on LDAP, CYRUS and POSTFIX. Its has some integrated modules: a LDAP manager, Cyrus-IMAP Mailbox (cyradm replacement), Cyrus-IMAP Partition manager (report-like), Sieve manager, Postfix Queue manager.