email not sending django code example

Example: sending email with django

from django.core.mail import send_mail
class UserList(generics.ListCreateAPIView):
    queryset = User.objects.all()
    serializer_class = UserSerializer
    def perform_create(self, serializer):
        created_object = serializer.save()
        send_mail('Subject here','Here is the message.','[email protected]', 
            [created_object.email],  fail_silently=False,)