SendRecurring - SendRecurring allows you to setup, send, and maintain scheduled email reminders.
Calendly - Say goodbye to phone and email tag for finding the perfect meeting time with Calendly. It's 100% free, super easy to use and you'll love our customer service.
Recurrr - Send recurring emails
Acuity Scheduling - Automate your client bookings, cancellations, reminders & payments using the worlds friendliest online scheduling software.
FollowUpThen - The simplest way to schedule an email reminder
Reservio - Reservio is a simple online booking and appointment scheduling application.