On 10.8.2012, at 9.31, Robin wrote: > On 8/9/2012 11:26 PM, Luigi Rosa wrote: >> I used K-9 client on Android for one year with push, but I had to remove >> it and go back to integrated email client because it drained the battery. > > It sounds like "push" was really implemented as a poll.
Dovecot has by default: imap_idle_notify_interval = 2 mins So the phone needs to receive and send data every 2 minutes. Increasing this / disabling it entirely should help with power usage. But even then active TCP connections do eat up battery.