To successfully migrate data from your organization's Google Workspace, you need to have your administrator add ShareGate Migrate to the Google Workspace allowlist.
Note: ShareGate Migrate only supports migrations from drives and Gmail accounts that are part of a Google Workspace organization.
Copy from Gmail is currently in beta.
How-To
Access your Google Admin console.
Select Security in the sidebar.
Expand Access and data control.
Select API controls.
Verify that Trust internal, domain-owned apps is checked.
Click on Settings.
Very that Trust internal apps is turned on.
Close Settings to go back to the API control page.
Click on MANAGE THIRD-PARTY APP ACCESS.
Select Configure new app from the top menu.
Copy-paste the line below in the Search for app field.
863730239928-vtuvc0acvjg4va13mu8svrns63n2k148.apps.googleusercontent.com
Click Search.
Select ShareGate Migrate (it should be the only result).
Select All in [your organization name].
Click Continue.
Select Trusted.
Click Continue.
Review the new app settings.
Click Finish.
ShareGate Migrate should now figure in your Configured apps list.
Click on API Controls in the breadcrumb menu at the top.
Click on MANAGE DOMAIN WIDE DELEGATION at the bottom of the page.
Select Add new from the top menu.
Copy and paste the info below in the Client ID field.
863730239928-qlbiuhv19ak18hi56mk2mp61ca9s5co3.apps.googleusercontent.com
Copy and paste the info below in the OAuth scopes field.
https://www.googleapis.com/auth/drive, https://www.googleapis.com/auth/userinfo.email, https://www.googleapis.com/auth/admin.directory.user.readonly, https://www.googleapis.com/auth/admin.directory.group.readonly, https://www.googleapis.com/auth/admin.directory.domain.readonly, https://www.googleapis.com/auth/admin.directory.customer.readonly, https://www.googleapis.com/auth/gmail.readonly, https://www.googleapis.com/auth/admin.directory.resource.calendar.readonly, https://www.googleapis.com/auth/calendar.readonly, https://www.googleapis.com/auth/calendar.events
Click AUTHORIZE.
You are now set up for your Google migration.
Note: If you experience any issues, see Google's article, Allow third-party apps for Drive files.