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Transparent tracking pixel for email open detection

n8nn8n5 modulesv1.0
UNSUPPORTED_SLUG_FORMAT

Description This workflow serves a 1x1 transparent PNG image via a webhook, which can be embedded in an email to track when the email is opened. When the image is loaded by the recipient's email client, the webhook is triggered, optionally capturing a userId to identify who opened the email. ๐Ÿ“‚ Workflow Steps 1. Webhook Trigger (Request img) - Path: /webhook/change-with-your-id - Triggered by an HTTP request (e.g. when the image is loaded in an email). - Accepts a query parameter id to identif

At a glance

Transparent tracking pixel for email open detection is a ready-made n8n workflow you import as a workflow JSON file โ€” no build required. It connects UNSUPPORTED_SLUG_FORMAT. It's free to download. Follow the 5-step import below to go live in minutes.

Platform
n8n
Connects
UNSUPPORTED_SLUG_FORMAT
Modules
5
Price
Free
Version
v1.0
Transparent tracking pixel for email open detection workflow diagram

About this workflow

Description This workflow serves a 1x1 transparent PNG image via a webhook, which can be embedded in an email to track when the email is opened. When the image is loaded by the recipient's email client, the webhook is triggered, optionally capturing a userId to identify who opened the email. ๐Ÿ“‚ Workflow Steps 1. Webhook Trigger (Request img) - Path: /webhook/change-with-your-id - Triggered by an HTTP request (e.g. when the image is loaded in an email). - Accepts a query parameter id to identify the recipient. 2. Set Base64 Data (Create data pix) - Creates a variable data containing a Base64-encoded transparent PNG image (1x1 pixel). 3. Convert to Binary (Create img bin) - Converts the Base64 data string into a binary file. - Sets MIME type to image/png. 4. Respond to Webhook (Respond to Webhook) - Sends the binary image file in the HTTP response. 5. Logging (Do anything to log) - Placeholder node to log or process the id or request metadata. - You can access the id using {{$json["query"]["id"]}}. - You can also use any parameter you want โœ‰๏ธ How to Use in Emails Embed the image in an HTML email like this: When the email is opened and the image is loaded, the workflow will be triggered. ๐Ÿ› ๏ธ Notes - Some email clients block images by default; this may prevent tracking. - You can enhance the workflow to store open events in a database, log the timestamp, IP, or user agent. - Make sure to comply with data privacy and consent regulations (e.g. GDPR).

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How to import this n8n workflow

  1. 1

    Download the workflow JSON file after purchase.

  2. 2

    Open n8n โ†’ click the menu โ†’ Import from File.

  3. 3

    Select the downloaded JSON and import.

  4. 4

    Set up credentials for each node that requires them.

  5. 5

    Click Execute Workflow to test, then activate.

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