How to change AT&T signature on text-to-emails??? (or charge them for advertising...)

That originates from ATT server. It can not be eliminated any way that I can find.

 

Not to be a smarta$$, but why use something you can do for free. I don't pay for AT&T texting in any capacity because its a rip-off. Ever since a decade ago when they started charging per msg I stopped. Instead, now I use Google's FREE service which does not stamp crap like that. They provide an awesome service. Instead of fighting them for something you'll never win unless you go to court, just do the walking and take your money.

 

I dopay for ATT Messaging because of GoogleSsinc. It replaced all my calendar events that I did not want on Google Calendar with Google's Calendar events. Plus I can monitor my kid's texting.