[Users] How to prevent IMAP NOOP?

[Removed GDPR]

> if you are concerned about privacy, why not go for POP in the first
> place ? (removing all  mails from server after they are d/l)

I am actually considering it. The only thing that is stopping me is
that I need to be able to access my email from different computers
(and from phone rarely, sometimes) and syncing that would be a pain. Any
solutions to that which you could recommend?