Push email
I just started working for best buy mobile, and I'm a little unsure about this. I seem to get different answers from people I've asked. I just want to make sure I understand this. Another thing - if a phone supports pop3 email, does that necessarily mean all pop3 email providers? Let's say Comcast, for instance?
If a phone says supports pop3 emails - then just assume that it will work with all of the like. You'll probably never run into a pop3 that won't work - sometimes a setting needs to be enabled on the customers email server in order for it to work...
Sometimes carriers have features available to customers that gives them push technology. For example - the AT&T tilt has a $45 feature that gives it push capabilities.
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Push mail account technology is provided by MS Exchange, RIM Blackberry, and some IMAP providers. Apple will make it's .Mac mail a true Push provider and I beleive it works on IMAP.
Pop mail uses PULL not PUSH technology. Which means your device, if it supports POP, will poll your email provider at timed intravals starting at around 15 min and going up. With true PUSH mail, your mail server actually pings your device and tells it to sync the mail as soon as it arrives.