Robuta

https://squareup.com/help/au/en/article/6729-customer-confirmations-with-square-appointments

Manage appointment booking notifications and reminders | Square Support Centre - AU

manage appointment support centre booking notifications reminders

https://1800notify.com/

1-800 Notify | HIPAA compliant patient appointment reminders, billing reminders and notifications

patient appointment reminders hipaa compliant notify billing

https://intercom.help/sortscape/en/articles/7180214-sending-appointment-notifications-to-customers

Sending appointment notifications to customers | Sortscape Help Center

appointment notifications help center sending customers