Latest / The Email Marketing Podcast with Fexingo: Newsletters, Open Rates, and Subscriber Growth / Why Email Revenue Stagnates Despite High Open Rates
Transcript
- Lucas: If these marketing conversations have sparked something you've actually used, consider supporting us directly at buy me a coffee dot com slash fexingo so we can keep making this show ad-free. Luna: Yeah, it really helps keep the lights on when there's no corporate sponsor dictating the agenda. Lucas: Thanks for the support, by the way. Now, let's get into today's angle. We have covered personalization, subject lines, and frequency extensively. But I want to talk about a metric that is actively lying to you right now. It is the disconnect between open rates and actual revenue conversion. In September twenty twenty-six, we are seeing more marketers celebrating double-digit open rates while their bottom line stagnates. The problem is not the content. The problem is the integrity of the list itself. Luna: That sounds like a classic vanity metric trap. Why are people still obsessed with opens when the sale is what matters? Lucas: Because opens are easy to measure and hard to manipulate compared to clicks or purchases. When an inbox provider like Gmail or Apple Mail reports an open, it feels like validation. But if that open comes from a dormant account, a spam trap, or someone who unsubscribed but never clicked the link, it is pure noise. Let's look at a specific case. A mid-sized apparel brand recently reported a four percent increase in their quarterly open rate. On paper, that is great. In reality, their revenue per subscriber dropped by twelve percent because half those new 'opens' came from reactivated ghosts—accounts that had been inactive for years but suddenly triggered a client-side image load. Luna: Reactivated ghosts? That is a creepy way to put it. How does that even happen technically? Lucas: It happens because of how modern email clients handle tracking pixels. If you switch providers or change your domain reputation, some old emails sitting in deep archive folders might finally render when a user logs in after a long break. Or worse, automated bots scrape your lists and ping those pixels just to test if the address is valid. You get a spike in opens, you feel good, and then you spend money sending more emails to dead weight. The cost of acquisition goes up, but the return goes nowhere. Luna: So you are saying the open rate is becoming an unreliable proxy for engagement entirely. Lucas: Exactly. And here is the deeper issue. When you rely on inflated open rates, you stop listening to the real signal, which is the click to open ratio. If ten percent of your list opens the email, but only one percent of those openers click, you have a content or offer problem. But if fifty percent open, and zero percent click, you have a list quality problem. Most brands fix the content first, which is backwards. You need to fix the list first. Luna: I see. So the first step is auditing who is actually reading versus who is just triggering pixels. Lucas: Yes. And that requires a brutal conversation about list decay. Every email list decays naturally by about two to five percent per year. That is normal. But if your decay rate is slower than that, you are accumulating junk. Junk emails hurt your sender reputation. They lower your deliverability. And eventually, inbox providers start filtering your legitimate messages into the promotions tab or the spam folder. It is a slow bleed. You do not notice it until your transactional emails—the order confirmations—are also landing in spam. Luna: That is scary. Because once your sender reputation tanks, it takes months to rebuild. Is there a specific threshold where you should purge a segment? Lucas: There is a rule of thumb called the ninety-day rule. If a subscriber has not opened or clicked any email in ninety days, they are effectively dead. You should move them to a win-back campaign immediately. If they do not engage with that win-back sequence within two weeks, they leave the active list permanently. It hurts your raw subscriber count, yes. But it improves your average open rate, your deliverability, and your revenue per subscriber. It is better to have ten thousand engaged subscribers than one hundred thousand indifferent ones. Luna: But won't aggressive pruning make your lists look smaller to investors or stakeholders who don't understand the nuance? Lucas: Only if they are incompetent. Smart stakeholders care about revenue, not vanity counts. In fact, showing a smaller list with higher conversion rates is a stronger argument for budget increases. It proves efficiency. Let me give you another example. A fintech startup I consulted with last month cut their list size by thirty percent using that ninety-day rule. Their open rate jumped from eighteen percent to thirty-two percent overnight. Their click-through rate doubled. And most importantly, their unsubscribe rate dropped because they were only messaging people who wanted to hear from them. Luna: Thirty percent cut with doubled CTR? That is a massive efficiency gain. Did they face any pushback from the product team? Lucas: Initially, yes. The product lead was worried about losing potential future users. But the data showed that those dormant users were costing money in storage and API calls, generating zero value. Once they saw the revenue lift, the objection vanished. It is a mindset shift. You have to treat your email list like a garden, not a warehouse. You prune the dead branches so the healthy ones get more sunlight. Luna: I like that analogy. Pruning is painful but necessary for growth. What about the technical side? How do you identify those ninety-day ghosts accurately? Lucas: You need robust segmentation tags in your CRM. Do not rely solely on your email service provider. Pull the data weekly. Look for three specific behaviors: no opens, no clicks, and no transactional activity. If someone buys a product but never opens a newsletter, they are still valuable. Keep them. But if they never buy and never open, they are noise. Also, check for hard bounces. If an email bounces, remove it immediately. Do not wait for a retry cycle. Every bounce degrades your domain health. Luna: Right, because those invalid addresses are essentially digital litter. They clutter the inbox and poison the well. Lucas: Precisely. And here is a subtle point many miss. Double opt-in processes help, but they do not prevent decay. People sign up, forget why, and then ignore everything. Double opt-in ensures intent at the moment of signup, but it does not guarantee ongoing interest. You still need regular hygiene. I recommend a quarterly audit. Run a script that flags anyone inactive for over six months. Send a polite farewell email asking if they want to stay. Give them a one-click unsubscribe option that is visible and clear. Paradoxically, making it easy to leave reduces the chance they will mark you as spam instead. Luna: That is counterintuitive but makes sense. If they can't find the unsubscribe button, they hit the spam report button. Which is much worse for deliverability. Lucas: Exactly. Spam complaints are the nuclear option for inbox providers. One complaint can trigger stricter filtering for your entire domain. Unsubscribes are harmless. Spam reports are deadly. Protect your domain reputation above all else. Even if it means losing a few subscribers. The cost of acquiring a new customer is high. The cost of protecting your existing infrastructure is low. Luna: So the hierarchy is clear: avoid spam reports, manage unsubscribes gracefully, and prune aggressively. Lucas: Yes. And let's talk about the financial implication. In September twenty twenty-six, advertising costs on social media platforms are rising. Customer acquisition costs are climbing. This makes your owned channels, like email, even more valuable. But only if they work. A dirty email list is like a leaky bucket. You pour money into ads to fill it, but the water drains out through the holes of bad data. Fix the holes first. Then pour more water. Luna: Leaky bucket. I am going to steal that phrase. It perfectly captures the inefficiency we see in so many campaigns. Lucas: Use it. Now, one more tactical piece. When you run those win-back campaigns for the ninety-day ghosts, do not try to sell them anything. Just ask for permission. 'Do you still want to hear from us?' That is it. No discount codes. No urgent deadlines. Just a simple choice. The response rate tells you everything you need to know about the remaining list quality. Luna: Simple is powerful. It respects the subscriber's time and intelligence. I think a lot of brands overcomplicate it because they fear silence. Lucas: Fear leads to clutter. Clutter leads to deletion. Silence is clean. It allows you to rebuild trust with the people who stay. Those survivors become your super-users. They engage more. They refer friends. They drive disproportionate revenue. Your goal is not to maximize the number of people on the list. Your goal is to maximize the value of each person on the list. Luna: Value over volume. That shifts the entire KPI framework from growth hacking to sustainable relationship building. Lucas: Exactly. It changes how you design your forms, how you write your copy, and how you measure success. Stop looking at total subscribers. Start looking at revenue per subscriber. Start looking at click-through rate. Start looking at spam complaint rate. These are the metrics that predict long-term viability. Open rate is just the entry ticket. It does not pay the bills. Luna: So if I had to summarize this for a CEO who is panicking about a dip in open rates, what would I say? Lucas: I would say that the dip is likely a correction. We are shedding dead weight. The remaining list is healthier. The next quarter's revenue should reflect that health. If the revenue does not go up, then we have a content problem. But if the revenue stays flat while the list shrinks, we have a pricing or product problem. Hygiene isolates the variable. Luna: Isolating the variable. That is the key. You cannot diagnose the disease if you do not know which patient is sick. Lucas: Spot on. List hygiene is diagnostic medicine for your marketing department. It clears the noise so you can hear the signal. Without it, you are flying blind. With it, you have clarity. And clarity drives profit. Luna: Clarity drives profit. I think that is the headline for next week's discussion on attribution. Lucas: We will get there. But first, clean the house. Make sure the people inside actually want to be there. Everything else is just decoration. Luna: Decoration. I love that. Because at the end of the day, nobody reads the wallpaper. They read the message. Lucas: True. And if the message is going to the wrong room, it does not matter how pretty the wallpaper is. Luna: Well said. It forces us to respect the recipient's inbox as a limited resource. Lucas: Respect is the foundation of all good marketing. Whether it is email, social, or search. Treat the audience like guests, not targets. Luna: Guests. That reframes the entire strategy from extraction to hospitality. Lucas: Hospitality. Yes. You serve them value. You do not annoy them. And if they leave, you wish them well. You do not chase them down the street. Luna: Chasing them down the street is exactly what spam looks like. It is desperate and ineffective. Lucas: Desperate. Exactly. Confident marketing lets people go. It focuses energy on those who stay. That is the discipline required to scale sustainably. Luna: Sustainable scaling. Not explosive growth followed by collapse. Steady, healthy expansion. Lucas: Steady. Healthy. Profitable. Those are the words we should be putting on our dashboards in September twenty twenty-six. Luna: Dashboard goals. Clean lists, high engagement, loyal subscribers. It sounds boring, but it is actually brilliant. Lucas: Boring is good. Boring means reliable. Boring means you are not burning cash on fake metrics. Luna: Fake metrics are expensive. Real metrics are priceless. Lucas: Priceless. I will drink to that. Let's keep our lists clean and our messages clear. Luna: Clean lists and clear messages. That is the path to longevity. Lucas: Longevity. The ultimate competitive advantage in a noisy world. Luna: Here is to the quiet winners who prune their gardens and watch them bloom. Lucas: To the quiet winners. And to you, for keeping your inbox tidy.