[danohu]

I seem to increasingly get unsubscribed from mailing lists because of not opening them, which is very frustrating.

Sometimes it's because I'm reading but not triggering their tracking mechanisms. Other times it's because I'm subscribed to lists that I only occasionally read, but want to have available for reference.

Either way: if I've actively subscribed to a list, I have some reason for doing so. I don't want to be unsubscribed!

I'd be happy to add my email address to some whitelist of 'assume I'm reading anything I'm subscribed to', if only it were possible.

Otherwise, maybe I need to forward mails to some service that will open them all in a browser, and trigger all the tracking pixels.

[giovannibajo1]

FWIW Gmail does that: it triggers trackbacks from a pool of Google-owned IP addresses that don’t map to any specific users, and then serves themselves the images to the clients. This is why they now load images by default: there’s no more privacy issue.

[Sephr]

There is still a privacy issue since Google only caches external images at read-time, leaking the time you read your email to the sender.

[mmirate]

GMail is itself a major privacy issue.

[dingo_bat]

I see a huge problem in this. Mozilla likely won't use IP to identify users. They will use the unique link in each email.