Restoring the emails from an export back into Gmail requires the use of 3rd party applications to import an MBox file. We recommend you use the Thunderbird application to transfer the MBox files from your Google account to UMD email. You will be required to export your mail to the Mbox format. For instructions on how to create the MBox file, see Use Google Takeout to Export Data from Google Mail to an MBox File.
NOTE: University personnel are prohibited from transferring, forwarding or sending UMD business email to or from a TERPmail or personal email account. For more information, read IT Standard Institutional Email (IT-14) and UMD Email Frequently Asked Questions (FAQ) in the IT Library.
Download, install and configure the Thunderbird mail application. This article works with the version, 10.9.1 (64-bit).
Follow these instructions for installing ImportExportTools NG.