Auto Email to notify customer

i really need a help on this , I have a custom field in Customer Module where it shows the expiry date of the license of my customer, and i want to send an auto email to notify the customer.

Anybody can help me please

Hello @xchicox ,
In the Server script Create a Scheduler Event

do you have any sample script for me to review and follow?

@xchicox , Server script for Auto ToDo task then set Notification according to it.