If you are seeking for the best email backup software,
ZOOK Email Backup Tool is a good option. An advanced all-in-one solution for backing up emails from 30+ webmail sources, including Gmail, G Suite, Roundcube, IMAP Server, Exchange Server, Outlook.com, Hotmail, GoDaddy, Hostgator, and others, and transferring them to PST, PDF, MSG, EML, MBOX, MHT, HTML, Office 365, Exchange Server, IMAP Server, and others. You can evaluate the functionality and process of your selected email server by backing up the first 25 emails for free.
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Best Email Backup Software