Authentication/SAML
Zimbra Single Sign-On using SAML with SimpleSAMLphp
Did you know that Zimbra support SAML single sign on? SAML is an open standard that allows you to have a single login page for all applications in your organization. SAML is a Zimbra Network Edition feature. Once you have set-up your SAML portal you can easily add Multi Factor Authentication.
Set up Zimbra SP in SimpleSAMLphp
See the following links that are updated regularly:
https://blog.zimbra.com/2021/03/updated-saml-for-zimbra-now-supports-single-log-out/
https://blog.zimbra.com/2020/02/zimbra-and-single-sign-on-using-saml/
https://github.com/Zimbra/keycloak