Exchange Online Plan 1 vs M365 E3

Jon Mercer 1,026 Reputation points
2022-12-13T22:40:18.713+00:00

We have a couple mailboxes that have a M365 E3 license on them, that are shared that were set up before I joined the company, and the people that set them up are long gone. We are going through working at migrating to Azure from AD which means we need to implement the policies that were in AD in Intune and such, and it is preferred if we could just free up an E3 license.

Is there any type of scenario that would require licensing a mailbox that is just shared between people with an E3 license instead of an Exchange Online Plan 1 or 2?

Exchange Online
Exchange Online
A Microsoft email and calendaring hosted service.
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  1. Andy David - MVP 158K Reputation points MVP Volunteer Moderator
    2022-12-14T00:00:21.097+00:00

    A shared mailbox in ExO does not require any license except for a few exceptions. Unless that shared mailbox meets those scenarios, you can disable the associated account and remove the licenses all together

    https://learn.microsoft.com/en-us/microsoft-365/admin/email/about-shared-mailboxes?view=o365-worldwide

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  2. Andy David - MVP 158K Reputation points MVP Volunteer Moderator
    2022-12-14T16:42:46.583+00:00

    Hi, Sorry, I guess what I am saying is that M365 E3 would never be required for a shared mailbox simply because its a disabled account and that SKU is really designed for an actual user accessing 365/Azure workloads, not a shared mailbox. Hope that helps.


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