Add new Google users in the destination tenant.
- If you are migrating Exchange Online to Gmail and will retain the same domain in the destination environment:
- We recommend that you add the domain to the Google tenant so that the Gmail mailbox addresses are the same as those in Exchange Online. When configuring mappings in migration projects, you can use the same addresses for source and destination mailboxes. For example, **user@contoso.onmicrosoft.com** to **user@contoso.onmicrosoft.com**. After the cutover, you must add the MX records to the destination domain to ensure that the destination mailbox can be used normally.
- If you are migrating from Exchange Online to Gmail and the domain will not be moved to the destination environment:
- When configuring mappings in migration projects, you can use different addresses for source and destination mailboxes. For example, **user@contoso.onmicrosoft.com** to
