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Apple iOS 15 Mail Privacy Protection Open Rate Trends
By Tom Kulzer October 1, 2021
Apple’s Mail Privacy Protection (MPP) rollout in iOS 15 has
Apple’s Mail Privacy Protection (MPP) rollout in iOS 15 has caused fascinating changes in open rate metrics. The most interesting of which is the change in behavior of when we see opens being detected.
Let’s dive into a few charts using data from hundreds of millions of delivered messages.
Apple Mail opens by a percentage of total mail sent
Below you’ll see the raw volume trends of user opens as Apple iOS 15 is adopted on an hourly basis.
Raw opens by hour as Apple iOS 15 is adopted.
More Night Time Readers?
Look closely and you’ll see the peaks and valleys are different on older iOS versions vs. Apple’s new MPP proxy in iOS 15. Putting proxied iOS 15 tr...