There’s no way for the company to reach you other than via email.

Host resets password: When there’s an attack against a service that manages accounts (mail or otherwise), they may take the prudent step to reset all passwords whether or not they know a successful breach occurred.

(I use Postbox and it provides a special pop-up web sheet in a window for this purpose.) For one of my mail accounts, I have to refresh my email token weekly with a fresh login or access email is blocked. This occurs largely with corporate-style mail systems and web-hosted ones deployed by Google, Microsoft, and others for small and large businesses alike.

Token expires: You’re using a connection that creates a token stored in Mail, and the mail server causes that token record to expire.

However, there are some circumstances in which your legitimate email account and password need re-entry or a new password created:

Your settings should never become corrupted: there’s no reason to re-enter details that were perfect the first time around. An app-specific password may have expired or been revoked.

Mail mac smtp server offline