What if I do not have an email address? July 07, 2022 08:02 Updated You will need a valid email address to use the McDonald's App. Related articles How fast will I be able to receive the OTP via email? I am having issues registering the McDonald's App. Why is this so? Can I change my email address under my profile? I have more than one McDonald’s® App deal. Can I redeem more than one deal at the same time? I am having issues with keying in promo code for deals. Why is this so?