Email Open Tracking Using Transparent Pixel

This n8n workflow enables email marketers and communicators to track when an email is opened by embedding a transparent 1×1 pixel image in the email content. When the recipient loads the image, a webhook is triggered, allowing you to log the event or perform other actions. The workflow involves setting up a webhook, generating a Base64 encoded transparent PNG, converting it into binary format, and responding with the image, all while capturing the recipient’s ID or other parameters for analytics. This setup is useful for understanding engagement and optimizing email campaigns. The workflow steps include: 1) Listening for webhook triggers when the image loads; 2) Creating the pixel data as a Base64 string; 3) Converting the data into a binary PNG file; 4) Responding with the image to the requester; 5) Logging the open event for further analysis.