Latest / The Email Marketing Podcast with Fexingo: Newsletters, Open Rates, and Subscriber Growth / How Email List Inflation Hurts Deliverability and Revenue
Transcript
- Lucas: So Luna, quick math question for you. If I gave you a choice between a two hundred thousand name email list and a forty thousand name list, which one would you take? Luna: Uh, is this a trick question? I'd probably take the forty thousand if the two hundred thousand is full of dead weight. Lucas: Exactly. And that's what we're talking about today, because a lot of marketers still chase that vanity metric. Bigger list, more subscribers, more zeros on the spreadsheet. But the truth is, an inflated list can quietly destroy your deliverability and your revenue. Luna: And it's so tempting, right? You see a competitor bragging about their subscriber count, or a vendor offers you a 'list append' service, and suddenly you're thinking, why not? Lucas: Right. And I've seen it happen in a really specific way. I was talking to a DTC skincare brand earlier this year, and they had grown their list from ninety thousand to a hundred and seventy thousand in about six months. Sounded amazing on paper. But their open rates had dropped from forty one percent to twenty two percent. Luna: Ouch. That's a brutal slide. And I'm guessing the revenue per campaign wasn't too happy either. Lucas: Not at all. They were sending to everyone the same way they always had, but the segment they were actually reaching was shrinking. The new subscribers they'd pulled in from a couple of big contest promotions and a poorly targeted ad campaign were mostly non-openers. And every send to those people was a signal to the inbox providers that their mail wasn't welcome. Luna: So that's the key. It's not just that those people aren't opening. It's that their inaction is actively hurting you with Gmail and Outlook. Lucas: Exactly. The algorithms look at engagement signals per sender, and if a large chunk of your list hasn't opened in ninety days, your sender reputation takes a hit. And once that happens, even your most loyal subscribers start landing in spam. Luna: I've heard this called 'list rot'. Is that the technical term? Lucas: It's as technical as we need to get. It's the slow decay of deliverability as your list grows without a corresponding increase in engaged users. And it's dangerous because it's silent. You don't notice until your campaign results start slipping. Luna: So what were the numbers for that skincare brand? How did they turn it around? Lucas: Oh, they turned it around pretty dramatically. But first, they had to do the scary thing: they had to cut. They implemented a hard sunset policy. Anyone who hadn't opened in ninety days got moved to a special segment, and after a final re-engagement campaign, they removed the ones who still didn't bite. Luna: And how many did they end up cutting? Lucas: They went from a hundred and seventy thousand down to about ninety two thousand. So they basically erased all that questionable growth. But here's the kicker: their open rates bounced back to thirty eight percent, and their revenue per campaign actually went up by eighteen percent because they were reaching people who actually wanted to hear from them. Luna: So they lost half their list and made more money. That's a fantastic example of why the number of names is not the point. Lucas: It's the perfect illustration. And I think the really counterintuitive part is that the cost of maintaining a huge, unengaged list is hidden. You're paying your email service provider for those extra contacts, you're paying for the creative and the sends, and you're paying in lost revenue because the people who should be buying are getting buried in promotions or spam. Luna: And there's also the reputational damage with your domain. Once you're flagged as a low-quality sender, it can take months to recover. Lucas: Right. And that's why the fix isn't just about cleaning your list once. It's about building hygiene into your process. You need to be tracking engagement velocity, I think. If you see the percentage of engaged subscribers dropping quarter over quarter, that's your early warning sign. Luna: What's a good metric to watch? I mean, beyond open rate, because we all know open rate is imperfect. Lucas: I like to look at the ratio of engaged subscribers to total subscribers. If that ratio falls below sixty percent, you're in trouble. And by engaged I mean at least one open or click in the last ninety days, not just a click on the unsubscribe link. Luna: Right. And that's the kind of number you can put on a dashboard and review monthly. So, what are the practical steps for someone who suspects their list is bloated? Lucas: First, segment out your non-openers for the last ninety days. Then run a targeted re-engagement campaign to that group, maybe two or three touches over a couple of weeks, with a compelling offer or a simple 'do you still want to hear from us?' Ask. Then, anyone who doesn't engage goes to a suppression list. Luna: And what about the people who do engage? Do you keep them in a new segment? Lucas: Yes. Move them back into your normal rotation, but maybe with a slightly different nurture path for a while to rebuild the relationship. And if you want to be really disciplined, implement a zero-tolerance policy for new subscribers who don't engage within the first thirty days. That's often a sign they signed up for a lead magnet but have no real interest in your product. Luna: That's interesting, because it means you have to be careful with your lead magnets too. You don't want to attract the wrong crowd. Lucas: Exactly. And that's why I want to stress that the goal isn't to have a tiny list. It's to have a high-quality list. A hundred thousand engaged subscribers will outperform a million disengaged ones almost every time. Luna: It's like the difference between having a room full of people who are actually listening to you versus a stadium where everyone is on their phone. Lucas: Perfect analogy. And that's the mindset shift I want listeners to take away. Your list is not a trophy to show off. It's a living asset that needs to be pruned and nurtured. Luna: And if you've enjoyed this conversation about pruning and nurturing, you might be the kind of marketer who would appreciate a small gesture of support for the show. If these episodes have ever sparked an idea you actually used, that's the link in the show notes: buy me a coffee dot com slash fexingo. It's the smallest ask, and it keeps this podcast ad-free. Lucas: Yeah, we don't do sponsors or mid-roll ads, and that's by design. So if you've ever thought about supporting what we do, that's the way. No pressure at all, just a cup of virtual coffee. Luna: Now back to your point about lead magnets. How do you design them so they attract the right people in the first place? Lucas: That's a great question. The key is to match the lead magnet to your core offer, not just something broadly popular. If you sell expensive project management software, a free ebook on 'productivity hacks' is going to attract a lot of people who just want free stuff. But if you offer 'a template for calculating your team's ROI on software', you'll attract the decision-makers who are actually in the market. Luna: So it's about specificity and intent matching. Lucas: Yes. And you can also use your signup form to pre-qualify. Maybe ask a question like 'What's the biggest challenge you're facing?' and then use that to segment and personalize right from the start. That way, your welcome email can speak directly to their need, which dramatically increases the chance they'll engage. Luna: That sounds like a great way to build a strong relationship from day one. Lucas: And it pays off in the long run because those subscribers are more likely to open, click, and buy. And as we've seen, that engagement is what protects your deliverability and your revenue. Luna: So, to wrap up, what's the one thing you want our listeners to remember from today's episode? Lucas: I think it's that a bigger list is not automatically better. You have to look at the quality of the subscribers, not just the quantity. And if you're not tracking your engagement ratio, you're flying blind. Luna: And if you have a feeling your list might be a little bloated, don't be afraid to do a big clean-up. Your open rates, your sender reputation, and your bottom line will thank you. Lucas: Absolutely. Thanks for listening, everyone, and we'll catch you in the next one.