Email from another domain (another tenant)?

Valued Contributor

I believe I know the answer to this, but figure I'll ask anyways:


I have 2 O365 tenants,  Tenant One has and Tenant Two has


Is there a way to enable a user in Tenant Two ( to be able to send email as from their outlook without having 2 accounts (one in each domain)?

1 Reply

Nope. Best you can do is verify a subdomain in the other tenant and use it to assign aliases and send messages. Or send via an external system, but make sure to take care of SPF/DKIM checks.