About GWMMO

Google Workspace Migration for Microsoft Outlook

As an administrator for your organization, you can use Google Workspace Migration for Microsoft Outlook (GWMMO) to let your users import mail, calendar events, and personal contacts from a Microsoft Exchange account or a local PST file to a Google Workspace account. You can migrate data on behalf of a single user using the command-line version of the product.

What data can users import?

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

What can you exclude from a migration?

  • Junk mail and deleted items
  • Specific mail folders for a single user (admins only, from the command-line version)

Minimum system requirements

For Microsoft Windows: 

  • Windows Vista (32 and 64-bit)—Microsoft no longer supports Windows Vista. We recommend upgrading to a supported version of Windows.
  • Windows 7, 8, and 10 (32 and 64-bit)

We recommend that you update to the latest patches for your Windows version. 

For Outlook:

  • Outlook 2003 SP or 2007 SP2 (or SP1 with hotfix)—Microsoft no longer supports Outlook 2003 and 2007. We recommend upgrading to a supported version of Outlook.
  • Outlook 2010, 2013, 2016, and 2019 (32 and 64-bit)

What’s not supported

  • Mac iOS
  • Windows XP and Server 2003
  • Windows 10 ARM-based PCs
  • Outlook from Microsoft 365 (web, Android, Mac, and iOS versions)—Switch to a supported computer version of Outlook.

Related topic


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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