Invitation email to external user not being sent

[MTSBob]

Using Outlook 2016 desktop (Current Branch First Release build 1704)

1) Existing Private Team

2) Add external user (@gmail.com domain, not an O365 tenant user)

3) User never received an invite.

I've tried this on a few different external/non-O365 domains and similarly invite emails are not being sent. I've checked Spam/Junk folders. 

Is this a bug? Or am I doing something wrong? The "Group Membership" list does in fact list the newly addeded external members, so they appear to have been successfully added to the group.

Thanks in advance,

Bob

[#2 · Accepted solution]

Bob what this group created using Microsoft Teams?

[#3]

Hi Chris,

No, this group was created directly in Outlook 2016 desktop via "Home tab/Groups/New Group" with a privacy setting of "Private with external users".

(Incidentally, I am trying this out due to the fact that I'd previously had a similar issue with adding external users to a Team, which did not send the invite email to those users either, so I decided to try to see what the behavior was with just plain O365 Groups)

Bob

[#4]

Chris, I just created another group, and magically, the invitation mail was sent/received for the external user. Thanks for your help.

Bob