Muhammad Aamer Sajjad

Hi, 

I am looking for options to set up reminders for end users in Zendesk Support. I have customers whose contracts expire on different dates. I want to be notified when their contract expires so that I can create a ticket. Is it possible to do that? One way is to add a user and add contractual dates, but how would I receive notification of their expiration date so that I can create to engage them.
thanks