External Identities - Customize Verification Code mail on signup

Question

I'm playing around with Entra External Identities and creating a simple sign in / sign up flow.

I'd like tu customize the account verification code mail HTML template. Is there any way to do that ? I've tried looking in the External ID documentation and searching through Azure but could not find anything.

Here's the one from the Woodgrove sample app so people know about which mail i'm talking about :

Woodgrove grocery mail template html

Thanks for any answers.

Answer 1

You can configure a custom email provider by handling the OTP Send event using your own API.

For more information, see Configure a custom email provider for one time passcode send events (preview).

Answer 2

You may be able to do something with the branding (much like B2C), but you can change the tenant's name.

"The new tenant name also appears in the verification email sent to the user."

Answer 3

According to Microsoft, this feature is unavailable but should be available "soon".

https://learn.microsoft.com/en-us/answers/questions/1697513/entra-id-external-identities-verification-code-mai

Answer 4

This is possible with the help Custom Authentication Extensions, there are different events are available to configure, where you can call your custom logic in the workflow Below are the events supported

1. OnAttributeCollectionStart
2. OnAttributeCollectionSubmit
3. One time passcode send event

Check this link from Microsoft here : https://learn.microsoft.com/en-us/entra/identity-platform/custom-extension-overview