That won't protect you from this tracking technique (search for "web bug"). Refusing to allow your email client to download any images will prevent it, but will also make a lot of your email unreadable.
>>Refusing to allow your email client to download any images will prevent it, but will also make a lot of your email unreadable.
That’s a feature, not a bug. Going back to 8-bit ASCII text, no unicode, no (non-uuencoded or ascii) images not only reduces bandwidth requirements AND protects against all this tracking, but also is a measure of how O.G. the user is. Especially when displayed on a proper green screen.
I’ve had my “don’t show images” setting for decades.
If someone crafts an email that requires you to do this in order for it to be legible is a creeper (or idiot) anyway. Best to just ignore them as they are leaning more towards manipulating rather informing you.