Experience Cloud: How to verify the email address of an external user

To mark an external user's email address as verified, please perform one of the following four procedures:

• Methods to verify the email address
  Set a password via the New Member Welcome Email (*) 
  (*) You must enable Send welcome email in Workspaces | Administration | Emails for the target Experience Cloud site.

• Update the email address as an external user Access the Experience Cloud site as the external user and change the email address.
  (*) The setting "Require email confirmations for email address changes (applies to users in Experience Builder sites)" under [Setup] > [Identity Verification] must be enabled in advance.
  See: Define Identity Verification Settings for Your Orgs and Experience Cloud Sites

• Perform Identity Verification via verification code when logging in The external user logs in to the Experience Cloud site and completes the identity verification process using a verification code. 
  (*) A screen requesting a verification code will appear at each login until verified.
  Identity Verification Code Prompt Appears on Every Salesforce Login

• Use Apex methods
  Please refer to "Verify Email Addresses with Async Email".