Import 11GB PST file to Gmail without Outlook

(ask the Word installation question...maybe some here would be able to help...)

I would recommend you to use the free software MailStore Home http://www.mailstore.com/en/mailstore-home-email-archiving.aspx

It can import (archive) from all kind of files/programs/services including PST files, and then it can export it to a whole range of programs/services including to a Gmail account or Thunderbird.

1. Download the program from their site and install it. (During installation you can, if you want, choose to do a portable installation in a directory instead of in the system.)
2. Open the program, click on Archive E-mail and in there on Microsoft Outlook PST File.
3. Browse to the PST file, select it and press Open then Next. And complete the backup.
4. After backup presses is completed go to My Archive, right-click on this backup and go to Export To and select the place you want it exported to. (I would say exporting it straight to Thunderbird would be a better idea since it is all offline, and you aren't subjected to some problems Gmail sometimes makes for imports.)

G Suite Migration for Microsoft Outlook.

You can migrate email, contacts, and calendar data from Microsoft Outlook profiles and PST files to G Suite. Use this link to download G Suite Migration tool and import PST file into Gmail account.