Nested M365 Groups: Definitive Answer

Copper Contributor



I am writing here as I've not been able to find a definitive, conclusive answer for my question.


Consider the following case:


We have 1 distribution group, named


We also have 1 Microsoft 365 Group, named This M365 Group has 10 members. This Microsoft 365 group is nested inside


The Distribution Group is set up to accept internal and external e-mail. The Microsoft 365 group is set up to accept internal e-mail.


Internal User A,, sends an e-mail to . Since it's an internal e-mail, there should be no problem for the Distribution Group or the Microsoft 365 Group to accept the e-mail. The delivery report in Message Trace also shows that the e-mail has been received by the Distribution Group, and expanded to it's members.


However, no member of the nested Microsoft 365 Group  receive the e-mail that User A sent to . 


So my question: Is it, or is it not, possible to have a Microsoft 365 Group nested inside a Distribution Group, and also get all e-mail sent to the distribution group?

4 Replies
I believe you can’t do this! Although it will probably go to the group email then.

Good point, it probably goes to the group e-mail but never expands further.

best response confirmed by Marc8745 (Copper Contributor)

@Marc8745 this is the normal behaviour of an M365 group, however you can set a flag via PowerShell if I am not mistaken to change it so that everyone in the groups get the mail, otherwise only people who "subscripted" to that mailbox will get it.

Thank you @magichappens, this seems reasonable!