[skunkworker]

I believe there are a couple of approaches to this with varying amount of data storage, You can download all images immediately as the email is received (thus preventing image tracking as every image would then be clicked immediately) or have the ability to block all images and selectively turn them on when necessary (unless the image is inline etc).

[DarwinMailApp]

Thank you so much for your suggestion. This is gold.

I really like your approach to solving the problem.

I have taken note of your suggestions and will look into this further asap :)