if you have a look on my site chopsie you can see how people join it.
join it if you want and see the automated text you get back.
there are 2 ways of sending out to customers. you can have a database and then select whats numbers you want toi send to or you can send to individual numbers. i send to individual numbers as i ain't organized enough to enter them all on to the database...lol...i just print out my run sheets at night on wcp and then text the please call aheads. takes me about 15 minutes a night todo