Best mass texting app so far.

Simple & easy to use. And most importantly, because carriers set a limit on how many messages you can send (AT&T doesnt allow you to send more than 10 at a time), this app has a "bulk feature" where you can create 1 huge group, and it will send them in chunks of 1, 10 or 20!

BrianEff about Group SMS! 4, v3.3