Cryoserver - Cryoserver is an all-in-one email archiving solution that empowers you to preserve your email in a tamper-evident archive, making you transform your data into a useful archive for everyday use.

SpamTitan - Comprehensive Email Protection. 99.99% Spam Detection. Blocks phishing, viruses, malware and other email threats.

Gmvault - Backup the emails in your Gmail account.

Sanebox - SaneBox is a cloud-based service that allows users to filter and manage their emails.

imapsync - Console-based utility for migrating IMAP mailboxes.

MailCleaner - Cloud & on-premise anti spam software for businesses