check for email in update email

api/endpoints/user.py

@@ -67,9 +67,13 @@ class UserEndpoint(Resource):
             if 'newEmail' in data:
                 user_check = db.session.query(User).filter_by(email=data['newEmail']).first()
                 if user_check is None and re.search(EMAIL_REGEX, data['newEmail'].lower()):
+                    valid = validate_email(data.email.data.lower(), verify=True,check_mx=True)
+                    if valid:
                         user.email = data['newEmail'].lower()
                         db.session.commit()
                         return jsonify({"message": "email was updated", "status": 200})
+                    else:
+                        return jsonify({"message": "email doesn't exist", 'status': 400})
                 else:
                     return jsonify({"message": "invalid email", "status": 400})