06-06-2009, 07:21 AM
Join Date: Nov 2005
Location: New Hampshire
Carrier: ATT & Verizon
Post Thanks: 52
Thanked 777 Times in 737 Posts
Typically incoming email via BIS arrives every 15 minutes or less. RIM polls your email servers every 15 mins and pushes mail that is found to your device. If mail was found, it will repoll in 15 mins, pushing what it finds. This cycle continues until nothing is found at which time the poll reverts to 15 mins.
Some services such as gmail have agreements with RIM that allow for almost near real time delivery. If you feel the need to get it in a hurry, then look into that route.
Outgoing should be sent in near real time. When it gets to your server could be quickly or it could take a few minutes depending on the ISP and your email route and setup. No real way to know.