The first question everyone asks about cold outreach is what email open rate they should expect, usually so they can figure out whether their numbers are bad. It’s a reasonable question with a frustrating answer: the benchmark you’re chasing is mostly noise. Average open rates float somewhere in the twenties or thirties depending on whose study you read, but those numbers blend newsletters, marketing blasts, and cold outreach into one meaningless mush. Comparing your cold campaign to a brand’s newsletter tells you nothing.
Worse, open rate has quietly become one of the least trustworthy metrics in email, and most people don’t realize it. Before you optimize for it, it’s worth understanding what it actually measures now.
Why email open rate isn’t what it used to be
Open tracking works by loading a tiny invisible image when someone views your email. The problem is that Apple’s Mail Privacy Protection and similar features now pre-load that image whether or not the person actually opened anything. So a big chunk of your “opens” are machines, not humans. Your email open rate can look healthy while real attention is much lower, which makes it a shaky thing to base decisions on.
This doesn’t make the metric useless, but it does mean you should treat it as a rough directional signal, not gospel. A sudden drop might mean a deliverability problem. A steady number tells you little about whether anyone cared. Treat a rising open rate as mildly encouraging and a crashing one as a warning worth investigating, but never as proof that your message worked. The only proof of that is what people do next.
What actually moves it
If you do want more real opens, two things matter far more than the rest. The first is whether you land in the inbox at all, which is about sending from a warmed-up domain, keeping volume sane, and not tripping spam filters. The second is the subject line plus the sender name, the only two things a person sees before deciding to open. Everything else in your email is invisible at the moment of that decision, so those two short lines carry the entire weight of getting it opened at all.
- Send from a real person’s name, not “Team” or a no-reply address.
- Write subject lines that sound like a human wrote them to one person, not a campaign.
- Keep your sending volume low and your list clean, so you stay out of spam folders.
The metric that actually matters
For a founder doing real outreach, replies beat opens every time. An open is a maybe-a-machine-saw-it. A reply is a human who engaged. If you have to pick one number to obsess over, make it reply rate, because it’s honest and it’s the thing that turns into customers. A campaign with a modest open rate and a strong reply rate is winning, full stop. Report that number to yourself instead of the open rate, and you’ll make sharper decisions about who to email and what to say to them.
And reply rate comes from relevance. People answer messages that are clearly for them, about something they actually care about right now. That’s not a subject-line trick, it’s a targeting decision made before you write a word.
Which is the same principle behind cold outreach that doesn’t feel cold: warmth and engagement come from reaching the right person at the right moment. Chasing your email open rate misses the point if you’re emailing the wrong people. Finding the right ones, the few showing real signs they need you, is what we built Unbound Compute to do, so your replies climb regardless of what the open number says.