Looking for logging into the Ad Adress site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Ad Adress site. After that you can login as usual with your login credentials.
https://docs.microsoft.com/de-de/windows-server/identity/ad-fs/operations/configuring-alternate-login-id
https://social.technet.microsoft.com/Forums/Azure/en-US/9a739918-a9dd-4fea-acd4-387126343402/is-it-possible-to-have-active-directory-login-as-an-email-address?forum=winserverDS
https://support.zendesk.com/hc/en-us/articles/203663886-Setting-up-single-sign-on-using-Active-Directory-with-ADFS-and-SAML-Professional-and-Enterprise-
https://itstillworks.com/ip-address-user-active-directory-6160708.html
https://communities.ca.com/thread/241727266
https://www.petenetlive.com/KB/Article/0001238
https://stackoverflow.com/questions/12616475/develop-a-login-page-for-a-website-based-on-active-directory
http://azuredummies.com/2017/06/18/configure-ad-fs-to-use-email-address-as-alternate-login-id-real-scenario/
https://support.assetbank.co.uk/hc/en-gb/articles/115005040887-How-do-I-find-out-what-settings-to-use-for-Active-Directory-integration-
https://community.tableau.com/thread/155281
https://help.eset.com/esmc_admin/70/en-US/fs_login_screen.html
https://books.google.de/books?id=R9XvDAAAQBAJ&pg=PT167&lpg=PT167&dq=ad+login+address
https://docs.moodle.org/en/LDAP_authentication