SirAdmin is a GUI tool for administering Cyrus IMAP mailboxes, including creating, renaming, deleting, reconstructing, ACLs, and metadata without having to use cyradm from the command line.
Note: Active development on SirAdmin has ceased, but it is open source.
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Tags: 10.3, 10.4, 10.5, apple, free, imap, leopard, mac, mail, opensource, osx, panther, server, tiger