---
title: "Block email tracking pixels"
description: "OpenEmail strips 1×1 tracking pixels and hidden preheaders from every message you open, before it reaches your screen. On for every account, no setup."
url: "https://openemail.uk/features/no-tracking"
---

[Privacy & ownership](https://openemail.uk/features.md#trust)

# Tracking pixels stripped Gone before you read a word.

Any image declaring itself 1×1 or 0×0 is removed before a message reaches your screen, along with hidden preheader text. There is nothing to switch on.

[Open mail](https://openemail.uk/mail/inbox) [Get Started](https://openemail.uk/signup.md)[All features](https://openemail.uk/features.md)

In short

## What is an email tracking pixel?

A tracking pixel is an invisible image, one pixel square, at an address unique to your copy of a message. Loading it tells the sender’s server when you opened it.

How it works

## Removed on the way to your screen

It runs each time you open a message in the app. The stored copy stays as it arrived, and the API and MCP return that.

## Judged by size, whoever sent it

An image declaring 1×1 or 0×0 goes, OpenEmail’s own open pixel included, and so does a preheader styled out of sight. Real pictures stay.

## Pixels sized with CSS need pictures off

The pass reads width and height attributes, so a pixel shrunk by a style gets through. Pictures off holds every remote fetch.

## What the pass looks for

Images by their width and height attributes, preheaders by their class plus a hiding style.

width="1" height="1" a 1×1 image width="0" height="0" a 0×0 image \[class\*="preheader"\] preheader class display:none not displayed font-size:0 zero-size text line-height:0 zero line height max-height:0 collapsed box opacity:0 fully transparent mso-hide:all hidden in Outlook

What you get

## In the product today

Nothing to switch on

On for every account and every sender.

Our own pixel too

The 1×1 image OpenEmail adds to tracked mail goes like any other.

Real pictures stay

Logos and photos with real sizes are left alone.

Remote fonts dropped

Imported style sheets and remote web fonts go in the same pass.

Good practice

## Getting the most out of it

1. 01
   
   Turn automatic pictures off
   
   Switch off Load pictures in mail automatically to catch what the size rule misses.
2. 02
   
   Trust senders you need
   
   Trust Sender loads one address’s pictures while everyone else’s stay held.
3. 03
   
   Strip before you render
   
   A client rendering messages read over the API or MCP should remove tracking images first.

Where it stands

## Good to know

Questions

## Asked often

Keep going

## Works well with

Remote image control

Stop a sender fetching anything from their own server while you read.

See when mail you sent was opened

Whether a message you sent has been opened, when, how many times and which of its links were followed. On unless you turn it off, and plain about the readings it cannot get.

Block a sender or a domain

One address, or everything from a domain, stopped before it reaches you.

Start

## Your domain, your mail.

Point a domain at OpenEmail and read it in a mailbox built around it. The free plan covers one domain.

[Open mail](https://openemail.uk/mail/inbox) [Get Started](https://openemail.uk/signup.md)[Read the reference](https://openemail.uk/docs/knowledge/trust/no-tracking.md)