Test for yourself and see. Push is generally more efficient (if your client polls the server and there's no new mail then your client just wasted battery life) but it's difficult to tell you exactly what you'll experience with your specific conditions.Does changing mail to fetch every 30 minutes help the battery life? Assuming you're getting ~ 5 emails an hour?
I don't use push… I'm not under the illusion that my email is that urgent and me responding that quickly is just as important. People can wait… I've got a life.
Going off on a slight tangent: if you use certain email services (e.g., icloud, exchange, and gmail), you can control which incoming messages cause the iPhone to make a sound/vibrate. Basically, if you use filtering to mark an incoming message as read, the push still occurs, but no sound/vibration occurs. It's very useful if you get a lot of non-urgent email.I'm far more productive if I check my email hourly, rather than jump on every email that comes in every minute of the day. I'd never get anything done.
I don't use push I'm not under the illusion that my email is that urgent and me responding that quickly is just as important. People can wait I've got a life.
I workfor a NOC/HELP Desk. Our main means of communication are email and lync. I have 2 exchange accounts setup and 3 personal emails. I get on average 3-5 emails an hour during the day and about 10 an hour at night. I'm typically at 30% by 5 Pm. I do a few games, text, and limited calling throughout the day with my emails.
Some might argue that urgency is an illusion, and not a factor.
After all, there are surely times when you can NOT check or respond to an email INSTANTLY. Like in meetings, out of coverage, sleeping, etc.
Reminds me of a phrase one Sr VP once used. "Your lack of planning does not indicate an emergency on my part."