Intune issues with email migration

[TOIR_TEIUQ]

Hello there,

Someone know if there are account issues in the devices when you migrate an email to a diferent tenant?

Currently there are 2 companies and the devices of both companies are in intune. We are about to migrate the emails from company 2 to company 1 but we don't know what would happend to the devices of company 2 since their domain will change, their access will change. At the end they will have new accounts and the old domain will be @company.onmicrosoft.com.

They will be able to join their devices with their old email? or they will lose access?

Hoping someone can help me :).

Regards,

Oscar.

[#2]

I've seen where we end up with a duplicate profile issue that will cause havoc with the end user experience, patching and updates.

[#3]

If the intune enrolment is user based, the recommended way is to re-enrol the devices using new UPNs. Technically, @company.onmicrosoft.com should still allow access to the devices, but this is not sustainable if the users are expected to use the new UPNs.