Contacts disappearing and showing up when added back
We have users calling saying that they have stopped receiving our emails. When I look them up, they do not show up in the system. I then add them as if a new contact and I get a message that their account has been updated. The engagement panel will then show emails they received up until January 10 or so. Many emails have been sent since them. They do not have bounces or show up unsubscribed. It is as if they just disappeared for awhile. They then start receiving them again. My concern is that others have been dropped and we do not know about it. Members are not receiving important information and we are not even aware of it.