Hi @Zamwize - a quick google shows up some data here: https://www.omeda.com/impact-of-apples-mail-privacy-protection/ and https://www.omeda.com/the-impact-of-apples-mail-privacy-protection-6-months-later/We don't tend to rely on opens as much as we once did and look at other ways to measure engagement that doesn't have such a big error margin. There are also some ways you can match up browser user agents to open events to give you a slightly better error calculation on open rates.As you say, you...