Some internet providers block this.

by R. Proffitt Moderator - 3/10/12 7:13 AM

In Reply to: lg thrive, e-mailed text message by Tomyahoo

http://www.att.com/esupport/article.jsp?sid=KB63037&cv=820#fbid=hfDrVowQ5L8 gives others the process to read if they are to answer you.

I'd try this from a GMAIL or Yahoo email account.
Bob