Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
Yahoo push is terrible. I think i've had two emails pushed to my phone threw yahoo ever.

I exclusively use Yahoo. I'd say that Yahoo works about 60% of the time on 3G and only 30% of the time on Edge. You actually have to go to Mail and fetch new mail. Even then, sometimes I'd get a 3:30 message at a 7:15 fetching.
 
How funny. I come across a post earlier in this thread that says yahoo email offers push on the iPhone. So I immediately go to yahoo and create a new email address because I intend on strictly using email with my new iPhone, as I refuse to pay a dime for texting.

So, after I set up the yahoo email address, I come back to this thread to see people talking about how awfully the yahoo push works. lol

Guess I'll just set up my new iPhone with both my gmail and yahoo accounts and see what happens.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.