Alright, I've been curious about making a code that can send a text message. I figure if it's possible to send emails with php, there's probably a way to do the same with a text message. I did come across this thread which seems to be using a gateway to handle the actually sending of the message. However, I've also heard you can send a text message by using the email address provided by the phone company, such as ATT uses [10-digit number]@txt.att.net or Verizon using [10-digit phone number]@vtext.com.
Is there a benefit of one over the other, or possibly a better option? Preferably I'd like a free option if at all possible.
I've heard the latter sometimes isn't reliable, and that the message might not get there quickly. I was hoping to use it to alert people who want to be notified when the site is updated so, in case they want to do more then get an email, they have an option. I don't really need the option to send mass texts to hundreds of people or anything, it's more of a "you got chosen, come look" thing.
Any help is appreciated since my php knowledge is rather lacking and I've never attempted anything like this before.