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by mike-cardwell 4040 days ago
Does push "need" a central server? I connect to my IMAP server from K-9 Mail on my OnePlus One running Android using a Tor hidden service. And I have IMAP IDLE turned on, so a persistent connection is maintained. So as soon as an email arrives, it is pushed to my phone and I am notified. With no third party push service involved. And my phones battery still lasts about one and a half to two days.