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elangamban's avatar
elangamban
Copper Contributor
Aug 13, 2024

Google Workspace to microsoft 365 migration

When we are migrating from Google workspace to Microsoft 365 using Microsoft automated migration method, what are the chances of emails getting duplicated if in Google an email has multiple labels ta...
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microsoft 365
Ahmed_Masoud97's avatar
Ahmed_Masoud97
Iron Contributor
Dec 29, 2025

Good questions, these come up often with Google Workspace migrations.

Email duplication and labels

Google labels do not create duplicate emails in Microsoft 365. During automated migration, each message is migrated once. Labels are converted to folders where possible, but the email itself is not duplicated even if it had multiple labels in Gmail.

Migration limits

Microsoft does not publish a strict per day data cap for Google Workspace migrations. In practice, limits depend on tenant throttling, mailbox size, and network conditions. For small and mid size tenants, migrating all users concurrently is common and supported. Large mailboxes simply take longer.

 

I’ve covered these points with real world examples and best practices here

https://mstack360.com/google-workspace-to-microsoft-365-migration/

And this live migration video shows how the process behaves during execution

https://www.youtube.com/watch?v=C8f1YssSgXM

Best,

Ahmed Masoud

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