[czottmann]

Fastmail proxies all images (when using their webmail interface), and AFAIK remove tracking images. https://fastmail.blog/privacy-security/fastmail-keeps-you-sa...

[andreareina]

Reads are still tracked by virtue of the fact that the image was requested. Proxies do obscure the requester's IP address, but not much else.

[0xCMP]

they also typically obscure when it was read. Google at least pulls the image right away iiuc. If not then it really should.

most they should know is it was delivered. which is significantly better than nothing.

[potas]

In Fastmail you can choose to only display images for emails that are in your contacts. Proxy is just another layer of protection for when you actually want to see the images.