Email Verification in Firebase Auth

Firebase Authentication introduced email verification to ensure that users who register with email and password actually control the address they provide, addressing the lack of validation in its original release. After account creation, Firebase can send a verification email containing a confirmation link, and applications can check the verified status at sign-in to restrict access or enable features accordingly. Developers can customize verification email templates, action links, and reply addresses through the Firebase console, which also supports user management such as password changes and account removal. On Android, verification is initiated through the FirebaseUser.sendEmailVerification() method and its asynchronous task result, while FirebaseUser.isEmailVerified() reports the confirmation state after the user follows the link. Because user data is cached during an app session, developers should reload the current user before relying on an updated verification status.

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