Migrating from Google to Microsoft 365

Joshua Swifte 0 Reputation points
2023-03-27T02:11:14.67+00:00

We are migrating our google accounts over to 365

with reference to the following: https://learn.microsoft.com/en-us/exchange/mailbox-migration/how-it-all-works-in-the-backend

The user accounts in 365 are already configured with a mailbox and username that is the same as the emails we want to migrate from google.

We need to know how we can successfully migrate our google mail accounts over to 365 noting that all users are already set up with mailboxes using the email address we are migrating over from google?

Microsoft 365
Microsoft 365
Formerly Office 365, is a line of subscription services offered by Microsoft which adds to and includes the Microsoft Office product line.
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  2. Paolo Miotti 0 Reputation points
    2023-03-27T21:33:01.2+00:00

    Hi @Joshua Swifte ,

    on the scenario you indicated you are planning to migrate from Google Workplace on coexistent mode, with the routing of subdomain to maintain the communication between the users with the correct principal domain.

    What you need to do is, create an alias on all Google Mailbox with a dedicated google subdomain, and create an alias on the 365 mailboxes with dedicated 365 subdomain and add a target address on the 365 mailboxes that corresponding to the google subdomain mailboxes alias on each mailboxes.

    After that when you create the migration batch, it will change the target mailbox on 365 and make the forwarding on Google side when it is complete.

    Hope I was help you.

    My regards

    Paolo

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  3. Barry Evanz 235 Reputation points
    2023-10-16T17:25:36.7633333+00:00

    When migrating your Google Mail accounts to Office 365 with existing mailboxes, you have several options at your disposal, each with its own advantages.

    The Microsoft Migration Tool is a free and reliable choice. It supports the migration of user mailboxes, calendars, and contacts. To employ this tool, create a Microsoft 365 tenant and configure it to connect to both your Google Mail account and Office 365. Once configured, you can initiate the migration process.

    The second way is to utilize third-party migration tools, which offer additional features beyond the Microsoft Migration Tool. These tools can migrate various data types, schedule and automate migrations, and more. To use them, you'll need to purchase a license for the chosen tool and configure it to connect to both your Google Mail account and Office 365.

    If you prefer a hands-on approach, you can manually migrate your Google Mail accounts to Office 365. This involves exporting your Google Mail data to a PST file and then importing the PST file into Office 365. While this method is suitable for smaller migrations, it may become time-consuming and error-prone for larger-scale transitions.

    When implementing a cutover migration method, create a list of the users to be migrated. Export user mailboxes to PST files. Import these PST files into Office 365. Update the user's email addresses in Office 365 to match those used in Google Mail. Modify user email clients to connect to Office 365 mail servers. Note that cutover migration may involve some downtime for your users, so meticulous planning is crucial to minimize disruptions. Once the migration is complete, thoroughly test it by sending and receiving test emails and verify the successful migration of all user mailboxes.

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