If my email provider started doing something I don't like, shame on me for not saving a copy of my mail. Unless I'm explicitly paying them to keep a copy, which

If my email provider started doing something I don't like, shame on me for not saving a copy of my mail. Unless I'm explicitly paying them to keep a copy, which I'm pretty sure nobody using Twitter is doing, then they get to set the rules. And if I don't like the rules, I don't have to use the system, just like I wouldn't use a mail provider that deleted my mail without my action.