I have tried using the google voice app only to find that it doesn't support group SMS, and instead sends an individual text message to each person (which doesn't allow them to reply-all to the group I originally messages).
I have also tried using hangouts, only to discover that it does NOT use the google voice number.
Is there any way to combine these two features? can I do it from a web-browser interface somehow?
P.S. I would like to avoid signing up for Google+ if I can avoid it.