If you prefer an email address and a password to get signed into Relay Responder, that's no problem. When you load Responder, simply click on "Sign in with email and password," located below the "Email Link" button.
This process can be made even simpler if you save your email and password using your web browser's password manager.
Here's a few links to do so, depending on which web browser you prefer:
Internet Explorer is no longer supported by Microsoft, so Relay also does not support using Explorer for Responder. Please contact your IT manager or department to ensure you are running secure software.