Rob Spoor wrote:And start saving money, because it'll be nearly impossible to find a free solution.
This is another example of people asking "How do I do X?" without asking "What would the world be like if everybody could do X?"
Now of course people wouldn't normally extrapolate their question like that, when they just want to get something done. But let's ask that question... what would the world be like if everybody with a computer could send free SMS messages to every phone number they could get their hands on?
In a
word... spam.
But you will have noticed that you aren't overwhelmed by the volume of SMS spam showing up on your phone. From which it follows that it isn't easy to send free SMS messages to any old list of phone numbers.