Firebase authentication on the same account with several different emails

Question

I want to create an application that will allow you to create an account and associate several different letters with it. Each email associated with the account will be able to log into the account. Is this possible with Firebase?

Answer 1

Do you mean several different letters with passwords? or several different providers with different email addresses? You can associate several federated providers (Google, Facebook, etc.) with an existing account, even if the emails do not match currentUser.email. You can link one account to one provider if that provider is not already associated with another account. As for adding a few letters to enter the password, this is not supported.