Go to setup > email accounts >highlight the email you wanna send the service books for, then press the blackberry button, service books > press send service books.
So after the first time I sent the service book, got my e-mails right away. After that I started having hours of delay again. I tried the service book again but this time I didn't receive my e-mails right away.
I also tried the register solution which didn't work
I am on verizon, but had no email delivery most of the afternoon. I've read about other carriers having issues in many areas today (sprint for one, saw reports in canada and chicago), I read that everything goes through rim servers regardless of carrier, so that may be the problem. It may just be a fluke. My email started up again about 5pm est. You may be experiencing some sort of outage. Give it a few hours and try again. Good luck.
I think there is an issue with Yahoo email, and its not necessarily limited to blackberry. I've had similar issues on my blackberry, and my wife noticed the same thing on her Droid. This has been an issue for a number of days now.