AuthenticatedMemberID()

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 
Marketing Cloud Engagement ✅ Yes
Marketing Cloud Next ❌ No

Syntax 

The AuthenticatedMemberID() function doesn’t accept any parameters.

Usage 

You can call this function without passing any parameters.

1%%[ Output(AuthenticatedMemberID()) ]%%

The example outputs the member ID for the authenticated landing page user.

Getting Started
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Summary
AuthenticatedEmployeeId()
AuthenticatedEmployeeNotificationAddress()
AuthenticatedEmployeeUsername()
AuthenticatedEnterpriseId()
AuthenticatedMemberId()
AuthenticatedMemberName()
CloudPagesURL()
IsNullDefault()
LiveContentMicrositeURL()
MicrositeURL()
QueryParameter()
Redirect()
RequestParameter()
SMS Functions
SOAP API Functions
Social Functions
String Functions
Utility Functions

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