Hello @ptatum,
Apple Mail Privacy Protection is a new feature that released to iOS 15, iPad OS 15, MacOS Monterey and watchOS8 on September 20, 2021. In the Apple Mail App, Mail Privacy Protection will proxy the downloading of the invisible pixel embedded into the message by our servers to record open data. When this feature is on, Apple Mail will automatically trigger the Open tracking pixel, even if the contact didn't actually open the email.
Constant Contact's technical team is analyzing our current capabilities, and we are committed to providing reports that are accurate and timely, without compromising user security and privacy. In the meantime, we recommend including clickable links and a call-to-action in your emails. Read More links can be especially valuable to drive traffic and boost engagement.
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