Email Trackers and How to Block Them

If you’ve ever signed up for an email newsletter or added your email address to a website’s mailing list, your emails from that sender are probably being tracked. Mailing services like MailChimp and Postmark automatically gather some information from the emails they send, such as whether the message was opened, if any links were clicked, and sometimes even what device was used or what time zone it was in.
Many websites use this information to keep their email lists up to date. When they see that someone hasn’t opened any emails from their site in a few months, they remove that email address from their mailing list. Marketing departments and sales teams may also use email tracking software to see when a prospective client has read their emails so that they can send a follow-up email soon after to encourage the sale.
Email tracking software works by including a small bit of code, often in a single-pixel image, in the body of the message. There may also be code included in the clickable links within the email. That code relays all that information back to the sender so that they know who has been interacting with their emails or ignoring them.
If you’d prefer not to let your email-viewing habits get out, don’t worry! There are ways to block these email trackers. The easiest way is to go into your account settings and set your account to ask before displaying images or external content. This will block any hidden images that contain tracking code, but you can still allow images for the emails you choose on a case-by-case basis. Another way to block email tracking software is to use a browser extension, such as Ugly Email. Ugly Email is an extension for Firefox and Chrome which blocks many of the most common trackers. It marks tracked emails with an eyeball icon next to the subject line in your inbox to warn you, but it also blocks the tracking software when you open the message, so your privacy is protected.
Email trackers have been around almost as long as email newsletters, and most senders don’t use them maliciously. Trying to avoid all tracked emails is probably impossible, but you have every right to protect your privacy with all the tools available to you.
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