I'm toying around with using Gravity + Twilio for line management in a hotel.
A guest arrives to check in, and is standing in line. If the line is long enough, an employee will move through the line, taking basic information via my mobile-formatted Gravity form. Once I have their information, they can leave the line and go do something else. I'll use their information to call them back to the check in desk when it's their turn.
An SMS is sent when the information is entered as a way to confirm to the guest that they are indeed on the list. This can all be done out of the box with Gravity + Twilio. No problem.
Now I want to call them back to the checkin desk, though. I'd like to do this with an SMS as well. Rather than sending the SMS from my own phone, though, I'd like to do this through Twilio. Ideally, there'd be a button in my Gravity Entries page, that when clicked, would send a pre formatted SMS calling my guest back to the front desk for check in.