The bulk text appointment scheduler allows you to upload all your appointment reminders at once at have them each automatically be scheduled to go out at a particular date and time.
It also supports 3 custom fields, so you can upload those custom fields into the contact record and then use those custom fields in the text messages.
Hi [FIRSTNAME], This is a reminder of your appointment on [CUSTOM1], we will be arriving between [CUSTOM2]. Reply if you need to reschedule.
Hi Greg, This is a reminder of your appointment on 7/28/2021, we will be arriving between 9am - 11am. Reply if you need to reschedule.
A sample CSV file can be downloaded here.
To learn more and see our main appointment reminders page.