Forum Discussion
Add external email addresses to distribution group in AD synced Office 365?
Hello, I've been trying to see about adding some external email addresses for vendors that need to be in the loop frequently. The vendors have email addresses from their own domain. I have alre...
That's the expected behavior:
Can mail contacts be added to groups?
No, mail contacts can't be added to groups. You'll get the following error if you try to add a mail contact to a group.
If you want to add this mail contact to a group, you can delete the mail contact and create a guest user. Read Migrate distribution lists to Office 365 Groups - Admin help for more details.
You can use good old DGs for external contacts.
The irony being that if you have a distribution group in Azure AD, you can add external contacts, but NOT external guest users...
Just can't have your cake and eat it, right now.
