Download and open the Google Workspace to Office 365 Migration Tool and run it as an administrator.

The software opens with two backup options:

• Backup Google Workspace All Services: Choose it to backup all Google Workspace data, such as emails, contacts, and drive files, into Office 365.
• Backup Google Workspace Email Only: Select this option if you want to backup only emails to O365.

Here, we have selected Backup Google Workspace All Services. Choose the option that fits your needs and click Continue.

Then, select either Login with p12 or Login with JSON as desired, and Generate Credentials for use.

Enter the required details, such as the Root User email address, Service Account email, and the p12 file path to log in.v Also, pick the option Get User Mailboxes for the load.

To access multiple user accounts, choose Import Users from CSV and select the CSV file from your system. After that, click Login to continue.

After successful authentication, choose the User ID or IDs from which you want to export the data. Then click Next to proceed.

Select the Google Workspace items you want to back up to Office 365 email. After that, click Next to continue.

If you have chosen an individual user ID and also opted for Gmail, then you get the option to selectively opt for specific folders you want to migrate from the mailbox. Select them and click Next.

Note: Remember that Gmail must be opted in to receive these saving options and further processing.

Afterward, you get to choose an option for File Format or Email Client. For Office 365, click Continue under Email Client.

From the listed email clients, choose Office 365 for the G Suite to Office 365 migration.

Now, pick which mode of authentication you would like to opt for among the two: Modern Auth or via Client ID and Secret ID.

If you chose to log in via Username, then simply enter your Office 365 email address and click Login. It will redirect you to the browser for further processing.

After clicking Login, a dialog appears confirming redirection to the browser; click OK. Choose your Office 365 account, enter your password, and complete the login. You will receive a message that it has been successfully done.

If you choose the alternative option to log in via different IDs, then you need to enter all the Tenant ID, Client ID, Client Secret Value, and Username. You can also choose the Assign Impersonation feature for multiple logins. Tap Login.

If you have chosen this option to access multiple Office 365 user accounts at once in the destination, then a dialog appears. Here, opt for Automatic fetch users from Admin ID to load all Office 365 user accounts connected with the selected ID. Choose in which you want to save data and tap Next.

Alternatively, click Import CSV and choose the file with all user IDs, and click Open. Tap Next.

The Filters section helps you control which emails are included in the backup or migration. Below is a brief explanation of each filter option:

• Date Filter: Allows you to export emails only from a selected date range by setting a start date and an end date for migration in a particular timeframe.
• Skip Folders: Lets you exclude specific Gmail categories such as Forums, Updates, Personal, Promotions, Social, Chat, Spam, and Starred emails.
• Remove Duplicate Emails on the Basis of: Prevents exporting duplicate emails by checking fields like Body, Subject, or From.
• Migrate or Backup Emails without Attachments: Exports only email content and skips attachments to reduce file size.
• Skip Previously Migrated Data: Avoids exporting emails that were already migrated in an earlier process.

Once the filters required are selected, click Next.

Finally, click the Start Migration button to initiate the G Suite to Office 365 migration. Press Stop to halt the process in between, if required.

Once the backup process completes, a dialog appears as backup completed. Click OK, and the files are migrated between the cloud accounts.