Somewhere in your email platform right now, there’s a chart showing you a 45% open rate and a little green arrow pointing up. We’d love to tell you that means 45% of your customers opened your email with genuine excitement. We can’t. The number is lying to you, and it’s not even trying very hard to hide it.
Why can’t you trust your email open rate anymore?
Because a huge share of your “opens” aren’t a person opening your email at all — they’re Apple’s mail servers opening it for them, automatically, whether the person ever looks at it or not. If a meaningful slice of your list reads mail on an iPhone, iPad, or Mac (and for most stores, that’s most of the list), your open rate is now measuring something closer to “how many people have an Apple device” than “how many people are interested in what you sent.”
What is Apple Mail Privacy Protection, in plain terms?
Apple’s Mail app has a privacy setting called Mail Privacy Protection, on by default for most users since it rolled out. Here’s what it actually does to your numbers: before a person ever sees your email, Apple’s own servers pre-load it in the background — including the tiny invisible tracking pixel that email platforms use to count an “open.” That pre-load registers as an open in your dashboard. It happens automatically, in the background, often within seconds of the email landing, regardless of whether the person ever scrolls past the subject line.
The result: an email can show a 60%, 70%, even 90%+ open rate from Apple Mail users specifically, almost none of which reflects an actual human looking at the email. It’s not a bug, and it’s not your email platform’s fault — it’s Apple protecting its users’ privacy, which is a good thing for them and a confusing thing for your reporting.
How do you know if this is affecting your numbers?
- Check your email platform’s device or client breakdown for a recent campaign. If Apple Mail, iOS Mail, or Apple devices make up a large share of your “opens,” that’s your signal — this isn’t a hunch, it’s visible in the same report that gave you the inflated number.
- Look at the open rate on Apple Mail traffic specifically versus everything else (Gmail, Outlook, Yahoo). If Apple’s open rate is dramatically higher and suspiciously close to “everyone who received it,” that’s the pre-load effect, not genuine interest.
- Watch for opens that land within a second or two of send time, in a tight cluster, well before a person would realistically have read a subject line and decided to click into the email. That’s a server doing the opening, not a customer.
What should you track instead of open rate?
Click rate and click-to-open rate. A click requires an actual person to actually interact with your email — there’s no equivalent “privacy protection” feature quietly faking clicks on your behalf. If you need one number to watch week over week, make it clicks, not opens. If you want to compare campaigns against each other fairly, click-to-open rate (clicks divided by opens) gives you a sense of how compelling the content was to the people who did engage, even with a noisy opens denominator.
Past clicks, the number that actually pays your bills is conversion — did the email lead to a visit that led to a sale. That’s a harder number to get right (attribution windows and last-click rules complicate it, which is its own topic), but it’s the one that was never going to lie to you the way open rate now does.
Is open rate completely useless now?
Not completely — it’s still worth a glance for deliverability. A sudden, sharp drop in open rate across the board (not just Apple Mail) can still be an early warning that you’ve landed in spam folders or a sending domain problem has started. What it’s no longer good for is telling you whether a subject line worked, whether a segment is engaged, or whether a campaign was a success. Those questions now belong to clicks and conversions.
Why this matters to you
If you’ve been making real decisions off open rate — which subject lines to reuse, which segments to keep emailing, whether a campaign “worked” — go check the device breakdown on your last few sends before you decide anything else. If Apple Mail is a big chunk of your opens and the open rate there looks implausibly high, you’ve been grading your email program on a number that was never really measuring your customers. Switch your main scoreboard to click rate and actual sales, and you’ll get a truer read on what’s working — even if the chart doesn’t climb up and to the right quite as dramatically as it used to.
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