I’ve forgotten/cannot log in with my email address registered previously on McDelivery.com.sg. What must I do? June 16, 2022 04:14 Updated Register a new account with an email address (different from your previous one) to start ordering. Related articles Can I reset/deactivate my account? Can I contact McDonald’s® to change the email address for my account? Where can I change my account info? I am an existing McDelivery® user and don’t have a password. How do I sign in? What happens if I forget my password?