Mail one login

You're referring to a "single sign-on" (SSO) solution!

Single sign-on (SSO) is a technology that allows users to access multiple applications or systems with a single set of login credentials. This eliminates the need for users to remember multiple usernames and passwords, making it more convenient and secure.

Here's how it typically works:

1. A user attempts to access an application or system that is part of the SSO domain.
2. The application redirects the user to the SSO login page, which is usually a centralized authentication server.
3. The user enters their login credentials (e.g., username and password) on the SSO login page.
4. The SSO server verifies the credentials and authenticates the user.
5. If the authentication is successful, the SSO server issues a token or cookie to the user's browser.
6. The token or cookie is then used to authenticate the user for all subsequent requests to the applications or systems within the SSO domain.

The benefits of SSO include:

• Improved user experience: Users only need to remember one set of login credentials.
• Increased security: SSO reduces the risk of password-related attacks, as users only need to manage a single set of credentials.
• Simplified password management: Administrators can manage user credentials in a centralized location, making it easier to enforce password policies and rotate credentials.

Some common SSO protocols and technologies include:

• SAML (Security Assertion Markup Language)
• OAuth (Open Authorization)
• Kerberos
• Active Directory Federation Services (AD FS)
• Okta, OneLogin, and other cloud-based SSO solutions.

I hope that helps!