Advertisers and third parties use email trackers to collect information about your interaction with marketing emails. Most of these trackers are hidden in links, images or attachments contained in the body of the emails they send you. Trackers detect and tell the sender when or if an email was opened, as well as the user's email client and IP address. This information is typically used to measure the effectiveness of their marketing campaigns or to build a profile of you based on the content you engage with.

Block Email Trackers with Firefox Relay

Set Relay to block known email trackers contained in forwarded emails and keep your activity private. To turn on this protection, follow these steps:

1. Click the Relay icon in the toolbar.

   If it does not appear in the toolbar, the icon may be located in the extensions panel, which is displayed by clicking the extension icon in the toolbar.

2. Click the Launch Relay button to be directed to the Relay dashboard.

   

3. On the top right side of the window, select your user profile and select Settings.

   

4. Check the box next to Remove email trackers in all forwarded emails.
5. Click Save.

   

If trackers are found on a forwarded email, you’ll see a notification at the top indicating the number of trackers blocked for that email. Click the Learn More link in the email header for additional information.

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