Measure what matters

Measure email on the numbers that connect to money: delivered rate, unique click rate, conversion, unsubscribe rate, and complaint rate. Open rate is now unreliable because of privacy protections that pre-load images. Use it as a rough trend, never as proof. Set a baseline over three campaigns, then judge changes against your own history rather than industry averages. A common mistake is reacting to a single email's numbers instead of watching trends across several sends. One send can be skewed by a holiday, a subject line fluke, or a technical hiccup, and treating it as meaningful data leads to overcorrecting for noise rather than a real pattern. To decide which numbers deserve your attention, ask which one is closest to money for your business specifically — a booking, a purchase, a reply. That is usually conversions from clicks, not opens or even raw click count, because clicks can happen without leading anywhere useful. You can judge whether your metrics are healthy by comparing each send only against your own recent history, not against a number you saw somewhere else. A steady or improving trend against your own baseline is good news even if it looks unimpressive compared to a claim you read online, since your audience and offer are not the same as anyone else's. A pet supply shop noticed unsubscribes creeping up for two months straight while opens looked stable. Because they tracked unsubscribe rate as a real metric instead of ignoring it, they caught that a new send frequency was too aggressive and scaled back before it turned into serious list damage.

Key takeaways

• Open rate is now unreliable because of privacy protections that pre-load images.
• Set a baseline over three campaigns, then judge changes against your own history rather than industry averages.
• Automated image loading breaks the link between an open and a human.

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