Migrate existing encrypted messages to Gmail client-side encryption (CSE)

Beginning today, you can migrate encrypted emails from other services like Microsoft 365, Microsoft Exchange, or Virtu, to Gmail client-side encryption in the S/MIME format. Specifically:
  • S/MIME messages imported from other mail providers are now supported by Gmail CSE
  • Virtru customers can use our migration utility to encrypt their plain-text archives from Vault or Takeout, and import them as S/MIME messages
  • Customers can bulk-import any plain-text email archives into Gmail as S/MIME messages

Additional details

The Gmail CSE Migration Utility is available for Windows, Mac, and Linux and supports PST & Mbox file formats.

Getting started


Rollout pace

Web & Android: 
  • This feature is available now.


  • Available to Google Workspace Enterprise Plus, Education Standard, and Education Plus customers

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