Hi @RobT ,

Thanks for reaching out to us!

Check out the below integration article on Calendly + SimpleTexting to help guide you through setting up this particular zap:

Calendly + SimpleTexting

Be sure to choose "Invitee Created" as your Trigger and "Remove Contact" as your Action.

Let us know if this does the trick- we're here if you have any further questions!

Thanks for the assistance, I've gotten that far; however I have a formatting error I believe

"Invalid contact ID or phone number passed"

Issue resolved. Bad data in.....