- Go to a message and go to send
- Under general settings, tick send reminders
- Settings will open and you can select from the drop down menu what should happen if a message is not opened, choose either at a certain time or repeated with a delay:
If you choose to remind at a certain time, you'll have to select date and time for when you want to send the reminder.
If you choose repeated with a delay, you'll have to select from the drop down menus, the settings for repeat - number of times reminder should be sent - and delay - the timeslot in between reminders.