Latest / The Email Marketing Podcast with Fexingo: Newsletters, Open Rates, and Subscriber Growth / Why Email Engagement Beats Deliverability
Transcript
- Lucas: Look, I have been reading the latest sender reputation reports from the big infrastructure providers, and there is a massive disconnect between what agencies tell their clients and what the actual code in the mail servers does. Everyone is still obsessing over whether their emails hit the primary inbox or the promotions tab, but the real metric that matters right now, on October eleventh twenty twenty six, is not delivery. It is engagement velocity. Luna: So you are saying we should stop caring about open rates entirely? That feels like a hard pill for most marketing teams to swallow given how much they rely on those vanity numbers for reporting. Lucas: Not entirely swallow it, but definitely stop letting it drive the bus. Here is the concrete thing I want us to drill into today: the difference between a delivered email and an engaged one. Most companies are sending to lists where forty percent of those addresses haven't clicked anything in six months. When you blast that list, you aren't just wasting money. You are actively training the internet service providers to mark you as noise. Luna: Right, because silence isn't neutral anymore. Inactive subscribers are effectively dragging down your domain reputation with every single send that goes nowhere. Lucas: Exactly. Let me give you a specific example from a mid-sized e-commerce brand we looked at last quarter. They had two hundred thousand subscribers, which sounded impressive until you realized only fifteen thousand were opening more than twice a month. They kept sending weekly newsletters to everyone, hoping the dormant ones would wake up. Instead, their click-through rate dropped to zero point three percent, and Google started funneling half their messages straight to spam. Luna: That is a brutal efficiency problem. They were paying for storage and sending costs for people who didn't care, while simultaneously hurting their ability to reach the people who did. Lucas: Precisely. And here is the part that surprises people: the algorithm doesn't just look at bounces or complaints. It looks at positive signals too. Time spent viewing the email, clicking links, forwarding it, or even replying. If you send to five thousand hyper-engaged users, you might get a higher overall revenue number than if you send to two hundred thousand indifferent ones, simply because the ISPs see those strong signals and trust your domain more. Luna: So the strategy shifts from acquisition to activation? We need to prune the garden instead of just planting more seeds? Lucas: That is the perfect way to put it. But pruning hurts. It feels like you are losing subscribers. When you remove inactive accounts, your total count drops overnight. Your boss sees the number go down and panics. But if you keep them, your revenue per subscriber plummets, and your long-term deliverability dies. It is a classic case of short-term vanity metrics killing long-term viability. Luna: I have seen founders cry over a ten percent drop in list size when their actual profit margin went up by twenty percent. The math always wins, but the emotion never does. Lucas: Let's talk about the mechanics of that pruning process. There are two ways to handle inactive subscribers. One is a win-back campaign. You send a series of emails asking if they still want to hear from you, offering a small incentive to stay. The other is a silent purge. You just remove them after a set period of inactivity, say ninety days, and never speak to them again. Luna: Which one do you think yields better engagement signals for the internet service providers? Because I feel like a win-back attempt might still generate noise if most people just ignore it. Lucas: Good question. A win-back campaign can work if it is truly targeted. If someone hasn't opened in ninety days, sending them a generic newsletter is useless. But if you send a specific offer or a direct question, you force a binary choice. Click or no click. No click means they go quiet. Then you delete them. It cleans the slate immediately. Luna: And that binary choice creates a clear signal for the algorithm. Either they engage, proving they are valuable, or they don't, allowing you to cut the dead weight without waiting another six months. Lucas: Right. Now, let's look at the financial side of this. I pulled some aggregate data from a major email service provider comparing cost per acquisition against lifetime value for cleaned lists versus dirty lists. The cleaned lists had a higher customer acquisition cost upfront because they weren't buying cheap, low-quality leads. But their retention was double. Luna: That makes sense. People who opt in willingly are worth more than people who got dragged in through a shady lead magnet or a purchased list. Lucas: Exactly. Purchased lists are the worst possible thing for engagement velocity. When you buy a list, you are sending to people who never asked for your content. The instant you hit send, you are generating complaints. Even if you clean the list first, the engagement baseline is so low that it takes years to rebuild trust. It is like trying to run a marathon with weights tied to your ankles. Luna: So organic growth, even if it is slower, is the only sustainable path? Because those subscribers come with built-in consent and interest. Lucas: Built-in consent is everything. When someone types their email address into your form, they are making a micro-commitment. That initial click is the first data point in your engagement story. If you nurture that relationship with relevant content, that signal strengthens. If you ignore them or bombard them with irrelevant stuff, that signal weakens. Luna: It is really about relevance over frequency. Sending fewer emails to the right people beats sending daily emails to everyone. Lucas: Yes. And here is a tricky part that many marketers miss. Segmentation isn't just about demographics anymore. It is about behavioral recency. You need to treat a subscriber who opened yesterday differently from one who opened last year. In your email platform, you should be tagging people based on their last interaction date. Luna: So you create different flows for active users versus dormant users? Like, maybe active users get the new product launches, and dormant users get a re-engagement sequence? Lucas: Spot on. But don't just dump them all into one re-engagement bucket. Segment them by how long they have been gone. Someone gone for thirty days might just need a gentle nudge. Someone gone for six months needs a harder ask or a complete removal. The nuance matters because you want to preserve whatever goodwill is left before you cut ties. Luna: It feels like a lot of manual work to manage those segments, though. Especially for smaller teams that don't have dedicated data analysts. Lucas: It shouldn't be manual. Modern email platforms automate this now. You set rules. If open rate is below threshold for sixty days, move to segment B. If no click after three attempts in segment B, unsubscribe automatically. The technology handles the heavy lifting. The human job is to define the thresholds and write the content. Luna: So the barrier to entry is lower than I thought. It is less about hiring more people and more about configuring the existing tools correctly. Lucas: Absolutely. And let's touch on the content itself. When you are trying to boost engagement, the subject line is important, but the body copy is critical. If your subject line promises something and the email delivers nothing, you lose trust instantly. Clicks are easy to fake with curiosity gaps. Replies and forwards are hard to fake. Focus on content that encourages replies. Luna: Encouraging replies is such an underutilized tactic. It feels personal, and it definitely signals to the inbox providers that this conversation is meaningful. Lucas: It is the gold standard for engagement. I saw a study from a major B2B software company where they added a simple postscript asking readers to reply with one word about their biggest challenge. Their reply rate jumped to four percent. That is huge. Four percent of your list talking back to you is incredibly valuable data and a massive trust signal. Luna: Four percent reply rate changes the entire dynamic. It turns a broadcast into a dialogue. And that dialogue is what keeps you out of the spam folder. Lucas: It does. And it builds a moat around your business. Competitors can copy your ads, but they cannot copy your relationships. Those engaged subscribers are your asset. They are the ones who will buy your new products, refer your friends, and defend your brand when things go wrong. Luna: Which brings us back to the original point. Quality over quantity isn't just a slogan. It is the only mathematical reality that works in modern email marketing. Lucas: It is. And if you are still measuring success solely by open rates, you are flying blind. Start tracking reply rates, forward rates, and time-on-page. Those are the metrics that predict future revenue. Open rates are just the ticket to enter the room. Engagement is the reason you stay in the conversation. Luna: I love that framing. Ticket to enter vs. reason to stay. That is going to resonate with a lot of frustrated marketers watching their numbers flatline. Lucas: It should. Because the truth is, the game has changed. The ISPs are smarter, and the subscribers are more selective. If you want to survive, you have to earn that attention every single day, not assume it comes with the sign-up. Luna: So the final takeaway is clear: prune the list, reward the engaged, and ignore the vanity metrics. Focus on the people who actually want to be there. Lucas: Exactly. Build a community, not a database. The rest follows naturally. Luna: If these marketing conversations have sparked something you've actually used, consider supporting the show directly. We keep the ad-free experience running thanks to listeners who find value in our deep dives. If today was worth a coffee to you, that's the link — buy me a coffee dot com slash fexingo. Lucas: Thanks for keeping the lights on. It really helps us dig deeper into these topics without needing sponsors dictating the agenda. Luna: Yeah, and it lets us focus on the stuff that actually moves the needle for your business. Lucas: So, looking ahead to next week, we are going to test this theory. We are going to pick one inactive segment from our own archive and run a pure win-back experiment. I am curious to see if the reply rate holds up when we strip away all the fluff and just ask a direct question. What do you think, will anyone actually answer? Luna: I bet some will. People are starving for genuine connection in their inboxes. They just need a reason to believe it is real. Lucas: We will find out. Until then, keep your lists clean and your questions direct.