Returns the member ID of the authenticated landing page user. Use this function only with Microsites when using Sender Authenticated Redirection. Not for use with CloudPages.
Availability
<table> <tr> <td>Marketing Cloud Engagement</td> <td>✅ Yes</td> </tr> <tr> <td>Marketing Cloud Next</td> <td>❌ No</td> </tr> </table>Syntax
The AuthenticatedMemberID() function doesn’t accept any parameters.
Usage
You can call this function without passing any parameters.
%%[ Output(AuthenticatedMemberID()) ]%%
The example outputs the member ID for the authenticated landing page user.