MigrateEmails Thunderbird Backup Tool - MigrateEmails Thunderbird Backup Tool is the best utility to take email backup from Thunderbird and save or restore thunderbird emails to a hard drives or external hard drives.

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.

Weeom Lotus Notes to Outlook Converter - A professional Lotus Notes to Outlook converter tool by Weeom

Gmvault - Backup the emails in your Gmail account.

Disk Drill by Cleverfiles - Recover any type of deleted files in Windows & Mac including Office documents, messages, and media files quickly and easily.

imapsync - Console-based utility for migrating IMAP mailboxes.