Hi @Darshan
Thank you for reaching Microsoft Q&A Forum!
I understand that email claim is not being returned after a successful login. It might be issue with the email attribute is not being mapped correctly.
Go to the Microsoft Entra admin center and navigate to the Applications section-> Enterprise application Select the application that you have configured for SSO.
Click on the Single sign-on option in the left-hand menu.
Under the SAML Signing Certificate section, click on the Edit button for User Attributes & Claims.
Check if the email attribute is mapped correctly. The email attribute should be mapped to the user.mail attribute in Entra ID.
If the email attribute is mapped correctly, check the SAML token and see if the email attribute is present in the token. Also, review the detailed Audit logs and see if you find any insights on this issue. could you please collect the fiddler trace or browser capture and see the requesting is passing the right endpoint.