The Mailvita Gmail Backup Software can back up emails and attachments from Gmail into several file formats like PST, EML, MSG, MBOX, PDF, and HTML. This application lets batch emails from Gmail be exactly converted to multiple file formats. While backup the Gmail email to a hard disk, it maintains the original structure of the database file. This application runs under Windows and MS Outlook versions. Export emails from an email account require the user to input a valid email login and password. Download and try the tool using the free demo.
https://www.mailvita.com/gmail-backup-for-mac/