I disabled mails from Facebook, Amazon et similia.
I guess the only thing that I do that most people don't is that I don't subscribe to all kinds of crap and I don't put my email address online. In fact, I have had my gmail address since 2009 and I have had exactly 0 spam mail, and that's not hyperbole.
Hiding new mail until a given clear-out session is finished.
A count-down icon with the number of email processings required to wrap up your current clear-out sessions.