Populate the Message ID of transactional or campaign message.
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 Examples:
- Transactional: 58b7520fade9c24f338b4573
- Campaign: 9013312.1245