Azure AD B2C - “emails” claim in custom policy

Question

I\'m looking for a way to add an emails claim (collection of emails) to a custom policy for Azure AD B2C. This application claim is available from the Azure Po

Answer 1

I couldn't find an answer this either - it looks like the "emails" claim is being returned by a custom OutputClaimsTransformation, the configuration of which isn't available in the samples.

I did find the this answer on SO which helped, but it covers updated the "otherMails" claim for NEW users and I had existing users on the basic policies who I couldn't update in that way.

It seems that emails is being populated by concatenating "otherMails" (in the case of social signups) with the first entry in the "signInNames" array.

I ended up doing the following to get the "emails" claim dynamically created.

Create two new ClaimTypes in TrustFrameworkExtensions.xml

  
    Emails
    stringCollection
    User's email addresses
  

 
    First Other mail
    string
    Other Mail
  

Create 3 new ClaimsTransformations in TrustFrameworkExtensions.xml

Create a new TechnicalProfile in TrustFrameworkExtensions.xml:

    
      
        Read
        true
      
      false
      
        
      
      
                   
      
      
        
        
        
      
      
    

Add a new OrchestrationStep to the SignUpOrSignIn UserJourney just before the last step (SendClaims) in SignUpOrSignIn

Edit the PolicyProfile TechnicalProfile and add the OutputClaim: