Following are the simple steps that help you to back up, migrate and download Google Workspace Data:-
Step 1: Download, Install, and Run G Suite Backup Software as administrator on your system.
Step 2: Enter your G Suite Username and Service Account ID, add p12 File, choose the Mailboxes, and click on the Sign In with Google.
Step 3:Select the sub-user account configured with G Suite and click Next.
Step 4: Select Gmail from the list of all Google Services and tap Next.
Step 5: Choose the file format as PST from the drop-down list.
Step 6: Check these options:-
Step 7: Tick these features:-
Step 8: Click Next>>Dest Path>>Backup buttons.
Step 9: Soon, the Backup process of G Suite Mailboxes into PST is completed, and click Ok.
Step 5: Choose the Email Client as Office 365 from the drop-down menu.
Step 6: Enter the username, choose the Mailboxes(Mailbox/Archive/Public), Assign Impersonation, and check Login with Modern Authentication to Sign In.
Step 7: Then go for other software offering features like Date Filter, which will help you to move only selected mailboxes.
Step 8: Opt for these options:-
Step 9: After that, click on the login button.
Step 10: Here, you will be redirected to the default browser to complete the login process, and it will show a tab: Authentication Successful.
Step 11: Open the Software again and click on the Import CSV button.
Step 12: Select the CSV file from your system, and you will get User IDs with their Status. Click Ok.
Step 13: Opt for Office 365 users and click the Next button.
Step 14: Map your G Suite User account with your Office 365 User account.
Step 15: Once you complete the mapping process, click Next.
Step 16: Now, click the Backup button to initiate the G Suite to Office 365 migration process.
Step 17: Finally, all your email messages are migrated from your G Suite account to Office 365. Click Ok.
After downloading the Aryson Mac G Suite Backup Tool, you will find the welcome screen as played below.