By default, #Thunderbird automatically blocks images in your emails from being displayed -- because many of those images may contain tracking code.

(Sometimes these images are tiny "tracking pixels" you may not even see).

Take your protection one step further by installing #uBlock Origin to block all kinds of unwanted content in your RSS feeds -- it's now an official Thunderbird Add-on: https://addons.thunderbird.net/en-US/thunderbird/addon/ublock-origin/

#Privacy #Email

(EDITED FOR CLARITY)

uBlock Origin

Finally, an efficient blocker. Easy on CPU and memory. uBlock Origin (uBO) is a CPU and memory-efficient wide-spectrum content blocker that blocks ads, trackers, coin miners, popups, annoying anti-blockers, etc. in your feeds.

@thunderbird How cool is that - I have been waiting for a way to block trackers, whilst still loading at least some of the images!
@MagicLike It's also really useful if you use RSS feeds in Thunderbird.
@MagicLike @thunderbird hold on.. how is that possible? How does #Thunderbird distinguish a tracking image from a normal one? AFAIK, you can’t even get the file size using HTTP w/out signaling the server that that file is of interest to you, the signal of which sufficiently reveals you’ve opened the email.