Email Tracking Tool


What is an Invisible Image?
Invisible images are embedded within the email HTML code and remain hidden to the recipient. When the email is opened, the image is requested from the server, sending back information like email address and the time it was opened. This allows the sender to track user interactions with the email.


This technique is often used in email marketing to track the effectiveness of campaigns. Marketers can see how many people opened the email, how many clicked on links, and how long they spent reading the content.

Invisible Email Image Tracking Information

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The core logic behind using invisible images is simple: when the email is opened, the image is requested from a server, logging the event as an "open" and providing valuable metrics on email interaction.

Such tracking can be implemented with server-side programming languages like PHP, Python, Java, or Node.js. It involves embedding an image in the email, and when the image is loaded, the server logs the request. This data can then be processed to track open rates and other user behaviors.

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Grabify.icu offers a simple tool that lets you embed invisible tracking images in emails, so you can receive notifications when the recipient opens your email.