We need the ability to be able to set up reminders for people that sign up for an appointment.
Calendly has this feature.
I currently have calendly set where the individual gets a reminder email and SMS text 1 day before, 4 hours before, and 1 hour before the scheduled appointment.
Also, within those emails I'm able to add important (shortened) links for the meeting link, confirmation link, reschedule link, etc.