To log in to Yahoo Mail without a verification code, you can attempt to reset your password via the "Sign-in Helper". If you have forgotten your password, you can proceed to the Sign-in Helper page and input your email or phone number to start the process of resetting your password. Depending on your account, you might also need to input information to help prove that you are who you say you are, like security questions or a recovery email address. If you still cannot access your account, consider contacting Yahoo Pro Support. Here is a more detailed explanation: