The Call Where Everything Was Already Working
A client came into a recent coaching call with one goal: fix his open rates.
He'd been running cold email campaigns since January across multiple industries, multiple scripts. His open rates were stuck somewhere between 25% and 50%. He wanted a plan to push them to 60%, 70%, 80%. He'd tried different subject lines. Same result. He'd switched up his warmup setup - was running WarmupInbox, which showed 97% inbox placement. Everything looked fine on the deliverability side, but the open rates weren't moving, and he couldn't figure out why.
So I pulled up his campaign data.
And I saw something he hadn't mentioned. Something he hadn't noticed at all.
In his coaches niche campaign, he'd contacted 1,836 people. His open rate on that campaign? Right around 21%. By the number he was focused on, that looked like a mediocre campaign. Something to fix or abandon.
But the reply rate was also 21%.
That's 383 people who got back to him. And he came to this call asking why his open rates were too low.
You're misreading a good campaign as a bad one because you're watching the wrong number. You may already have your answer. You're just not reading the right column.
Open Rates Are Lying to You
Open rate tracking used to be a reliable signal. That era is over, and I'm not being dramatic - my team sends over a million cold emails a month. What I see now is that open rates are, at best, unreliable, and at worst, actively messing with your decisions.
Three things are killing open rate accuracy right now. First, AI spam filters that pre-scan emails before they ever reach a human - when the filter loads your tracking pixel to analyze the email, that counts as an open. Second, privacy updates from inbox providers that block external images by default, which means your pixel never loads even if someone reads every word. Remote content loading is also disabled in some clients entirely, so the open never registers even if the person reads and responds.
The result is a number that could be inflated, deflated, or somewhere in the middle - and you have no way to know which. This client's 25-50% open rates across his campaigns might be accurate. They might be half what they are. Double is equally possible. The measurement itself is broken.
I recently went into a Gold member's account and turned off open rate tracking immediately when I saw he was stuck at around 20% open rates and obsessing over it. His campaigns weren't performing, and he was convinced it was a subject line problem. The open rate data was leading him in the wrong direction.
When you're running outreach through a tool like Hunter campaigns - which is what this client was using - you're inheriting whatever open tracking method that tool uses. Different tools track opens differently. I told him to test running his campaigns through Instantly or through Omni and compare the results. The number you see for open rates is a function of the tool as much as it is a function of your deliverability.
So stop A/B testing subject lines against open rates. Stop trying to optimize what you can't accurately measure. The subject lines that work - the ones we use consistently because we've tested them against reply data, not open data - are things like "Quick Question" or just "Hey [First Name]." Simple, plain, nothing that triggers filters. We know these work because people reply to them. Not because a pixel fired.
The Metric That Tells You If You're Winning
Replies.
That's your ground truth. When you can't trust open rates, the reply rate is the first signal you have. Someone replying to your email is a verifiable action - binary, unambiguous, no inference required. They either did or they didn't.
But reply rate alone still isn't the full picture. What you want to track is positive reply rate.
Here's the difference: total reply rate counts everyone who responded, including unsubscribes, out-of-office autoreplies, angry responses, and interested prospects. Positive reply rate counts only the ones who expressed some form of interest.
When I asked this client what his overall conversion looked like, he told me roughly one in every 35 responses booked a meeting. That's approximately three meetings per hundred emails sent - enough to run a business on if you're in the right niche with the right offer. But he had no idea which campaigns were driving that ratio and which were dragging it down.
What's a good positive reply rate benchmark? I told him: anything over 6%, scale it. At 6%, you're generating six interested people for every hundred contacts you reach. That's pipeline. That's a campaign you should be scaling, not rewriting.
Total reply rate tells you whether the email is working. Positive reply rate is what pays. For revenue, look at meeting book rate.
Open rate sits below all three in terms of usefulness. If your reply rates are healthy, your subject lines are working by definition - you don't need a pixel to confirm it.
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Access Now →How to Find the Winner Already in Your Data
When I looked at this client's full campaign breakdown, the picture was clear within about thirty seconds. He had data across a dozen industries: coaches, insurance brokers, dentists, metal construction, audio studios, and several others. Within all that data, two or three campaigns were outperforming everything else by a significant margin.
The coaches campaign was the obvious standout. 1,836 contacts, 21% reply rate, 383 responses. Even if only a fraction of those were positive, that's enough pipeline to run an operation. Insurance brokers were doing well too. Dentists. Metal construction. These niches had people who open their emails and respond to outreach - not every niche does.
But because this client was sorted by open rate, the coaches campaign looked about the same as campaigns that had higher open percentages and were generating almost nothing. That's the trap. When you're focused on the wrong column, a winner looks like a loser.
Here's the diagnostic process I'd walk through with any client running cold email at scale:
Sort by total replies first. Pull every campaign you've run, then rank by raw reply count - not percentage, raw count. This tells you which audiences are engaging with your message at volume. A 25% reply rate on 50 contacts is less useful than a 15% reply rate on 1,800.
Categorize your replies. For each campaign, go through the responses and sort them: interested, not interested, unsubscribe request, out-of-office. The interested bucket is your positive reply rate. This is manual work, but you only need to do it once per campaign to understand what you're working with. If you're using a CRM like Close, you can track this systematically so the data gets easier to read over time.
Identify which campaigns beat your 1-in-35 ratio. At roughly 3 meetings per hundred emails, that's the baseline. Find the campaigns that are beating that. These are your winners. Find the ones that are nowhere close. Those are your losers - and that classification has nothing to do with their open rate.
Cut the losers. Scale the winners. I told this client directly: there are two or three niches in your data outperforming everything else. Find them. Stop emailing all these other industries until you've fully exhausted the audiences that are already responding. This is a resource allocation problem, and right now your resources are spread across campaigns that have no business getting your attention.
Identify which campaign is already working and put more contacts, more follow-up, and more energy behind it. If you need a better framework for the scripts to test once you've found your winning niche, the Top 5 Cold Email Scripts gives you the proven templates to run against it.
The Foundation Under Everything: Email Quality
When I asked this client what he thought was the single most important factor for positive reply rate, he wasn't sure. So I told him straight: email address quality. One hundred percent. Nothing else is close.
If the people you're emailing don't exist - outdated contacts, people who left the company, addresses that were never valid - they can never respond to you. It doesn't matter how good your first line is. It doesn't matter how sharp your case study is. If the contact has left the company or the address is invalid, the email is gone. This is why lead quality sits above everything else in the cold email stack.
Before you think about copy, before you think about subject lines, set deliverability settings aside - you need to verify that the people on your list work where you think they work, and that their email address will route to a live inbox today.
A list of 1,000 highly qualified, recently verified contacts will almost always outperform a list of 10,000 scraped contacts that haven't been validated. When someone sends me a campaign with great copy and terrible reply rates, the first thing I look at is list quality. How old is the data, how was it sourced, and has it been verified? The answer explains most underperformance.
Tools like email finders with live verification and a fresh B2B lead database aren't optional add-ons. They're part of the foundation. If you want a full breakdown of how to build lists that get replies, the Best Lead Strategy Guide covers it in detail.
What to Do This Week
If you're running cold email campaigns right now, here's the specific set of actions I'd take this week:
Turn off open rate tracking. On every campaign. Today. You can't optimize toward bad data, and right now that's what open rate data is - bad data with a confidence interval wide enough to drive a truck through. The only functional thing open tracking does at scale is introduce a pixel into your email that some inbox providers will flag, which can actively hurt your deliverability. Remove it.
Pull your campaign data and sort it by total replies - not open rate or click rate. Focus on the raw count. The campaign with the most responses is your starting point.
Go through the replies from that campaign and count the positives. I know it's manual. Do it anyway. You need to know your positive reply rate before you can make any decisions. If that number is above 6%, you have a campaign that's working. Stop everything else and figure out how to get more contacts into that funnel.
Cut what isn't working on this metric. Cut it entirely - don't pause or adjust. If a campaign has 300 sends and zero positive replies, it's not going to suddenly find its legs. Rework the offer and the targeting before you run it again, or kill it entirely and put those inbox sends toward what's working.
Find more contacts in your winning niches. This client's coaches campaign was at 1,836 contacts. That's not the ceiling. If 383 people responded to your message in a niche, there are more people in that niche. Find them, verify the emails, add them to the sequence. The campaign already proved itself - now feed it.
If you're pulling new lead lists, this is also the right time to look at targeted scrapers for specific niches rather than broad database exports. When you've identified that coaches or insurance brokers respond to your message, you want precision over volume at the top of the list-building process.
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Try the Lead Database →The Mistake Underneath the Mistake
Campaigns that are getting replies get dropped.
You send a couple thousand emails. The open rate comes back at 20-something percent. You were hoping for 60%. So in your head, the campaign didn't work. You move on, rewrite the copy, try different industries, A/B test subject lines for two weeks, and invest time and energy and inbox sends into campaigns that have no data behind them.
Meanwhile, 383 people responded to that "failed" campaign. Some percentage were interested. And you stopped before you ever dug into who they were, what they responded to, and how to reach more of them.
The data was telling you exactly what to do. You just weren't looking at the right number.
Open rate obsession actively redirects your attention toward a metric that isn't under your control, can't be accurately measured, and doesn't correlate strongly with revenue. While you're chasing 70% opens, someone else is finding their coaches campaign, doubling down on it, and booking meetings every week from the same niche you just abandoned.
It's a fact. Someone either typed a response and hit send or they didn't. Positive reply rate is what pays. Meeting book rate is where the revenue comes from. These are the numbers that tell you whether your business is working.
The coaches campaign was already working. It needed more contacts, more follow-up with the people who had already responded, and a sharper focus on what made that niche respond in the first place. Instead, it was being ignored because one column in the spreadsheet showed 21% and not 65%.
If you've been running cold email for more than a few months and it's not producing the results you expected, before you rewrite your scripts, before you switch tools, don't put cold email itself in question yet - go back through your data and sort it by reply rate. Find the campaign where people wrote back to you. That's your winner. It's already in your account. You're just not reading the right column.
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