imapsync - Console-based utility for migrating IMAP mailboxes.
Recuva - Accidentally deleted an important file? Lost files after a computer crash?
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.
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.
TestDisk - TestDisk is a free and open source data recovery software tool designed to recover lost partition and unerase deleted files. DownloadDownload TestDisk & PhotoRec. TestDisk is a free and open .