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About GWMMO

This article is for Google Workspace users. If you're an administrator setting up GWMMO for your users, go to GWMMO admin help.

You can use Google Workspace Migration for Microsoft Outlook (GWMMO) to import mail, calendar events, and personal contacts from a Microsoft Exchange account or a local PST file to a Google Workspace account. Your administrator needs to set up GWMMO, then you can import your own data when you're ready. 

What data can you import?

  • Mail, calendar, and contact data (all at once or in separate stages)
  • Mail sent before or after a specific date
  • All messages except junk and deleted messages

System requirements

Microsoft Windows 32- and 64-bit versions of Windows Vista*, 7*, 8*, 10, and 11

Update to the latest patches for your Windows version.

Microsoft Outlook
  • Outlook 2003 SP3* or 2007 SP2* (or SP1 with hotfix)*
  • 32- and 64-bit versions of Outlook 2010*, 2013*, 2016, 2019, and 2021
  • Outlook from Microsoft 365 desktop app (not web version)

* Microsoft no longer supports these versions. Upgrade to a supported version.

What’s not supported

  • macOS
  • Windows XP and Server 2003
  • 64-bit version of Office on ARM devices
  • Outlook from Microsoft 365 (web, Android, macOS, and iOS versions) and Outlook from Microsoft Store

    Switch to a supported Windows version of Outlook.

Related topics


Google, Google Workspace, and related marks and logos are trademarks of Google LLC. All other company and product names are trademarks of the companies with which they are associated.

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