That's not how email works 6 months ago
I've been getting similar letters in the mail from Ameriprise for over 15 years. I receive all my account-related emails, but because they can't _track me doing that_ they _assume_ there is some kind of problem.
I've contacted them about this multiple times and always get the same clueless & useless responses that ultimately end with "just disregard the notices" result.
What a waste of resources, at so many levels.