Populate the Message ID of transactional or campaign message.

message_id()

Use Case: Clients often want to have message ID passed over as a URL parameter for their own records and reporting. MessageID will dynamically populate for both transactionals and campaigns.0

Zephyr: In the Auto Append Parameters:

message_id={message_id()}

Message ID Examples:

• Transactional: 58b7520fade9c24f338b4573
• Campaign: 9013312.1245