What Email Tracking Pixels Reveal — and How to Stop Them

Many newsletters and marketing emails contain a tiny, invisible image — often a single transparent pixel. When your mail app loads it, the sender's server learns that you opened the message.

What a pixel can tell the sender

• That you opened the email, and when — including how many times.
• Your approximate location, derived from your IP address.
• Your device and app, from the request headers.
• Whether your address is active, which makes it more valuable to spammers.

How to block tracking

The most effective step is to stop remote images from loading automatically. Most mail apps have a setting for this; some offer a privacy feature that loads images through a proxy so your IP address is hidden.

In our temporary inbox, remote images are blocked by default and tiny tracking images are removed entirely before a message is stored. If you decide to view images, you can load them with one click — and because the address is temporary, any "active address" signal quickly becomes worthless.

Is tracking always bad?

Open tracking helps senders measure engagement, but it is usually done without clear consent. Blocking it does not break the email; you simply decide when to reveal that you read it.