I read about the Talking House transmitter on another forum.
It is used by Real Estate agents to advertise their listings
on a radio. Got me to thinking, Broadcast your opt-in message.
Save $50 on drive way sealcoating. Text keyword to SMS Code.
Kinda sounds like you are asking the potential customer to do
2 things to get the special.
Or, by broadcasting you can reach a larger audience.
Just thinking out loud.