Ugh, it seems that validation emails are being sent, and bounced.
So, back to the original question.
Is there a way to create a new group that does not receive any email communication? Or any other easy way to remove communication?
In the ACP years ago, it was tabbed and you could easily pick and choose the communications and save once. Now it's a lot of scrolling to the bottom, clicking, saving, and repeating for each user.