If your school's mail will be entirely on Google Workspace, you can set up Gmail for your school by enabling Gmail in the Admin console and then redirecting your domain's MX records to Google servers.
If your school's mail is routed through a legacy mail system, you'll need update your configuration in one of these ways:
- To deliver an incoming message to either a Gmail inbox or a legacy system inbox depending on the recipient, configure split delivery.
- To continue delivering a user's mail to his or her inbox on the legacy server and also forward copies of the mail to the user's Gmail inbox, configure dual delivery: Legacy server primary.
- To deliver an incoming message to the recipient's Gmail inbox and also forward a copy to the recipient's inbox on the legacy server, configure dual delivery: Google Workspace primary.