(cut).......On that note I still can't answer your Mass Text question, because I've spent so much time looking for the best Group Messaging App, and Google did it with Hangouts which is pretty much Native to all Android phones (Not a third party app like Handcent or Go SMS) Im still on Android 4.2, but supposedly all 4.3+ Android versions can do group sms with the stock messenger
GROUP TEXT/SMS/MMS SOLUTION:
ANDROID 4.2 and Below - Use updated Google Hangouts for Group Messaging, Go to settings and SMS and replace your stock app. Now you should be able to use Hangouts as your regular messaging app, I deactivated all notifications from my stock messenger.
ANDROID 4.3 and 4.4 - Use stock messenger or Hangouts.
Hope that quickly helps all people looking for that answer...took some years