Costar login gmail email

I think you meant to ask "How to login to Gmail with a costar email?"

If you have a costar email address and want to access your Gmail account, you can follow these steps:

1. Go to the Gmail login page: www.gmail.com
2. Enter your costar email address in the "Email" or "Username" field.
3. Enter your Gmail password in the "Password" field.
4. Click the "Next" or "Sign in" button.

If you're having trouble logging in, make sure you're using the correct email address and password. If you've forgotten your password, you can try resetting it by clicking on the "Forgot password" link on the Gmail login page.

Note: If you're using a costar email address that is not a Gmail address, you may need to use a different login process or contact your email provider for assistance.