I use Time Warner but haven't checked, but as far as I know from past WiFi experience it's unsendable, so I'd imagine it's the same with EDGE.
On a side note...there was one time I was in a very bad area for EDGE in my city and I tried sending a picture to a Web site via e-mail...normally it works without a doubt, but since EDGE was sketchy in that small area, it didn't send...but kept trying, trying, trying and had an error message it couldn't send. I noticed this after about 2 hours (I was working a ballgame at the time and didn't have time to check my phone). Anyways, it wore down about 1/2 my battery and made the phone very warm!
Is this by design? I figured if it couldn't send it'd pop up a message stating so and not keep retrying...anyone else experience this?
Sorry to do a semi-hijack, but the thread title was fitting in this case too!