NO! I do not want your newsletter! I wouldn't even have an email address if it wasn't absolutely required to operate in society today. The less email I get, the better!
Email is becoming like fax machines: An old, dated technology that refuses to die.
Rhetorical I'm sure, but actually yes! The popup that tries to get you to switch to the app when you are actively trying to give the offender money! eBay is a notable offender here (it pops up when I search for stuff to buy; why would you interrupt that?)
I'd give you an award but you've hit your maximum number of free things this month. Make an account, pay for a subscription, and sign up for needless spam then we'll let you have it along with some ads for good measure.