Here it says that this is the AT&T syntax: phonenumber@txt.att.net I have added my number with the format to receive alerts but it has not been successful, Do I need something else????
That is the correct syntax and it works for me on AT&T. Try sending an email to your 10 digit phone number (no dashes or other special characters) @txt.att.net and see if you receive a text message on your phone?