Alert Referrer before the end of the 'ownership' period

Summary

Is there a way to alert a Referrer before the end of his 'ownership' period

Content

Is there a way to notify a referrer that they are reaching the end of their 'ownership' period on their referrals? We have set the ownership to 365 days, but would like to alert the employee/referrer before this date is reached? Is it possible to write an alert for this scenario?

Thanks