Automated waitlist

It would help our business so much if you could create an option for an automated waitlist, whereby all clients on a practitioner’s waitlist automatically get a text when a cancellation happens. I imagine that wouldn’t be too hard to build? Also you might make a few cents on texts? Our practice doesn’t have the admin support to call 15 people who are all hoping for an earlier appointment with their psychologist. Currently we BCC email them all with a link to book online, but that is clunky too.