You need a proper Spectrum email account, just like other email services to use its feature. But many users have face Spectrum email not working on Mac problem. There are several reasons, such as improper configuration or settings that can create problem for you. There might be some issues while logging in to your account. In such a case, you can recover your password by using the “Forgot Password” option to get your account back.

https://www.supportforusa.com/spectrum-email-not-working/