At present there is no option of sending SMS to the customer once he gets enrolled to the loyalty program.It would be beneficial if we can greet the customer for joining the Loyalty Program.
For E.g,
Dear Mr.XXX,
We welcome to our XXX Loyalty Card Program.You would be getting reward points for Your purchases which can be redeemed at any of our store.
This feature already available at POS. In case of confusion please contact helpdesk .