How Notify Current user ,your insurance is going expiry within 5 days in django

[Gautam Ankul]

I am stuck in one problem and i want to notify current logged user for it's insurance will be expired within 5 days ago.

class Vehicle(models.Model): vehicle_no = models.CharField(max_length=100, blank=False, null=False) chasis_no = models.CharField(max_length=100, blank=False, null=False, unique=True) make = models.CharField(max_length=100, blank=False, null=False) insurance_no = models.CharField(max_length=100, blank=False, null=False) insurance_date = models.DateField(blank=False, null=False) insurance_expiry_date = models.DateField(blank=False, null=False)

Please help me to find exact solution