If you want to back up Gmail emails, then you can use the Syinfo Gmail Backup Tool. This tool typically allows you to back up or migrate Gmail to other email clients such as Office 365, G Suite, Gmail, Hotmail, IMAP, etc. The tool comes with a free version that helps you check the functionality of the software. Additionally, it is compatible with all versions of the Windows operating system. It also converts Gmail data to PDF, PST, MBOX, MSG, EML, DOC, and various other file formats.