Battery statistics reports the enormous power consumption for the Mail app
For 15 hours from the full charge, the battery statistics reports for the Mail app:
- 2.5 hours of active mode;
- 10 hours of radio transceiver on.
- 30% of total battery consumption.
However, there are only 3 mailboxes that are configured to poll for mail every 15 mins --- i.e. 4 times an hour and IMAP-push is disabled for all of them (as far as I know). Moreover, the list of processes shows Mail only in category "cached processes", not active or background ones.
So, how in the world could it transmit/receive something for 10 hours polling the servers only 4 times an hour?