It's extremely good. Battery drain is fairly minimal for a push-based e-mail solution. If you already run something like Palringo which keeps your data connection up all of the time, you won't notice any change in battery life.

e-mail is always instant, 100% reliable. Integrates with the default windows e-mail client perfectly, you wouldn't even know SEVEN was there 99% of the time.

I just wish I had a way to block the international texts. Sprint won't shut off international texts.

My roomate is from Spain, and he is on a shared plan with me. He can't make international calls out to his parents in Valencia (we tried it without the plan, just to see). So, no calls, but texts will go through just fine? It's pretty frustrating. SHUT IT OFF, SPRINT!