I had slow results with my local isp, messages would take forever or sometimes they would download to my computer and not to my phone at all. I created a gmail account and had my isp send a copy of everything to the gmail account. Then I set up the gmail account on my Storm. Now I get everything in a timely manner.
It might be your email server, or email size.
i use gmail and sent it to my yahoo thats also setup to my storm and its almost immidiate...even with pics attached
Some variable amount of delay is to be expected when using BIS. 15 minutes is a bit on the long end from my experience, but not unheard of. If it's taking 15 minutes with BES, that's a different story.
I have 3 Email addresses on my phone. Yahoo, Hotmail, and a work email. Yahoo and Hotmail are fairly instant my work email however can take up to 15 minutes to come through. I think that it has to do with the mail server that my work email comes from.
Very odd. I dont know what my problem is then. Like I said before, my wife and I both use Gmail and her comes through INSTANTLY, mine takes 10-15 minutes