I set up my blackberry email address through TMobile and it works fine. Then I set up my Comcast email address and I got the "Congratulations on setting up your new email..." so I know it was set up ok.
Here's the problem...I only receive a small fraction of the comcast emails now. Actually I haven't been getting any today, whereas yesterday I got about 65-75% of the comcast emails sent to my BB.
I resent my service books but still not getting comcast emails. What do I do next?

I've spent hours and hours on this today trying to figure it out, and I'm ready to blow this BB up!!

Please help a BB newbie.

Do you use Outlook with your Comcast email as well? If so, this might help: Some email comes to my BB and some does not - BlackBerryFAQ

No I'm using Windows Mail (Vista's default mail program; functions/looks just like Outlook express)

There should still be a setting somewhere for "Leave Messages on Server." When you said at one time you were getting 75% on the BB, where did the 25% go? Did they show up on Windows Mail?

Yes I would get all the emails going to my PC Windows Mail, but only some that went on to my BB.

Try this > Tiger Technologies: Leaving Mail on the Server with Windows Mail

Yeah I just did that. I guess I'll see if it helps or not.

If I go into Windows Mail and send an email to myself (comcast email address), it should show up on my phone right?

It should show up on both provided that you haven't setup any filters on your Comcast BIS account. Let me know if it works so the FAQ can be updated with how to watch out for "Leave Messages on Server" for Windows Mail.

Ok, I'm getting Comcast emails on my BB now, but now they're not going to my Comcast PC acct........Man is this frustrating!!!

Filters probably. Try to send an email to your Comcast from a different account and see if it shows on WinMail and your BB.

I sent an email from my BB email and it showed up on my BB comcast and my PC comcast acct.

Hopefully leaving messages on the server fixed the problem.

Thanks soooo much for the help.

Now that that's figured out, I can work on bluetooth issues tomorrow... lol

Glad it worked out for ya!

Mod JS, you might want to consider adding the instructions on the link I gave for leaving messages on server for Windows Mail on Vista. Thx