[asadm]

Related: GMail has an option to disable loading images by default. Which helps me escape tracker pixels and also know if a "human-like" email still has a tracking pixel or not.

[yearolinuxdsktp]

Fastmail.fm (a paid mail provider) also has a feature to not load remote images, and it’s on by default.

You can also set up arbitrarily complex filtering rules using Sieve, if the built-in rules UI is not sophisticated enough.

[c0balt]

To add some more mailbox.org also has it with sieve rules. Posteo should have it too iirc

[davchana]

Long time ago somebody told that gmail pre fetches all images, so tracker pixels report exactly one open occurrence for images in gmail email.

[mgarciaisaia]

Disabling external images was the default until they started proxying+caching the images themselves. So now _by default_ clients get to see the images without sending tracking data to the senders - Google doesn't like competition.

I still keep the images disabled, though. In most cases, you don't care about what's there in the images anyway.

[fhdkweig]

Mozilla's Thunderbird also has this feature. I'd imagine most security conscious mail reader/browsers do.

[have_faith]

So does Apple Mail, for anyone wondering.

[Pyrodogg]

It also helps avoid "oo shiny!" distractions and helps keep the focus on the message.