Nagmail
The daily reminder from companies or people that you're failing at life and they're not going to let you forget it through email or real mail.
Your streaming service says, 'You haven't watched anything in a week. We're worried about you.'
Your bank sends you a letter: 'You've been careless with your money. We're going to take it all.'
Your online store texts you: 'You left your cart. We know you're trying to forget us.'