Looks like textmarks requires the person to subscribe before you can send messages to them: "To keep everybody happy and prevent abuse, you can only send texts

Looks like textmarks requires the person to subscribe before you can send messages to them: "To keep everybody happy and prevent abuse, you can only send texts to subscribers of your TextMark." http://www.textmarks.com/dev/docs/send/?ref=devsb http://www.textmarks.com/dev/docs/send/?ref=devsb