[matteodepalo]

The problem with push notifications is that they drain a lot of battery. I enabled push notifications only for the applications that I really care about, like Mailbox or Facebook Messages. I just don't want other trivial applications to drain my battery.

[PanMan]

That's just not true (on iOS). Your phone has one connection to the (apple) server, the amount of messages send has very little influence. Only apps that run in the background (mostly location and voice) can drain your battery when not running.