Latest / The Email Marketing Podcast with Fexingo: Newsletters, Open Rates, and Subscriber Growth / How Email List Permission Ages Like Fine Wine
Transcript
- Lucas: Let's talk about something that doesn't get nearly enough attention in email marketing: the age of your permission. Luna: The age of permission — you mean how long ago someone actually opted in? Lucas: Exactly. Most marketers treat every subscriber who ever clicked 'subscribe' as a current yes. But a yes from 2018 is not the same as a yes from yesterday. People change email addresses, change interests, change jobs. That permission decays over time. Luna: So you're saying we should be segmenting by signup date, not just by engagement? Lucas: That's exactly what I'm saying. And a small e-commerce brand — let's call them Maple & Pine, a home goods store — did exactly this earlier this year. They had a list of about 80,000 subscribers. About 40,000 of them had joined more than two years ago. Their overall open rate was hovering around 22 percent. Luna: Right, that's pretty low. Industry average for e-commerce is usually around 18 to 22, so they were at the bottom. Lucas: They segmented their list into three buckets: subscribers who joined less than six months ago, subscribers who joined between six months and two years ago, and subscribers who joined more than two years ago. Then they sent the exact same campaign to each segment. Luna: Oh, this is going to be revealing. What happened? Lucas: The fresh segment — less than six months — opened at 41 percent. The middle segment opened at 29 percent. And the aged segment — more than two years — opened at just 11 percent. Same subject line, same send time, same content. Luna: Wow. So permission age alone accounted for a 30-point gap in open rate. That's massive. Lucas: It's the kind of gap that makes you rethink your entire list strategy. Because here's the thing — that aged segment wasn't unengaged in terms of clicks or purchases. Some of them were still buying. But their attention had clearly drifted. They weren't opening emails the way fresh subscribers were. Luna: So what did Maple & Pine do with that data? Lucas: They created a separate engagement track for the aged segment. Instead of sending them the same weekly newsletter, they sent a monthly digest with a stronger incentive — a 15 percent off coupon if they opened and clicked within 48 hours. They also cleaned out anyone who hadn't opened in six months. That brought the list down to about 65,000, but the overall open rate jumped to 34 percent. Luna: So they traded list size for engagement. That's usually a smart trade. Lucas: It is. And it also improved deliverability. Internet service providers look at engagement patterns. If you're sending to a large chunk of people who rarely open, your emails start landing in spam folders even for your best subscribers. Luna: That's the hidden cost of holding onto old permission. It drags down the whole domain's reputation. Lucas: Exactly. So one practical takeaway is: every six months, run a report of your list by signup date. If you don't have that data because you switched platforms or didn't track it — well, that's a separate problem. But if you do, look at open rates by cohort. You might find that permission from three years ago is essentially worthless. Luna: And if it is worthless, what do you do? Just delete those people? Lucas: Not necessarily. You can run a re-permission campaign. Send an email that says something like, 'We noticed you haven't opened in a while. Do you still want to hear from us? Click here to stay subscribed.' If they don't click within 30 days, you remove them. That's a clean way to refresh your permission. Luna: Some people worry that re-permission campaigns hurt engagement metrics, but if done right, they actually improve them. You're basically asking people to re-confirm their interest. Lucas: Right. And it's also a legal best practice. Under GDPR, consent doesn't have an explicit expiration date, but regulators have said that old consent may not be valid if the processing has changed. Even under can spam, which is looser, sending to people who clearly aren't interested increases complaint rates. Luna: So permission age is both a deliverability issue and a legal risk. That's a pretty strong case for paying attention to it. Lucas: Absolutely. And here's a counterintuitive point — sometimes older subscribers are your most valuable customers. They have purchase history, they know your brand. But you have to treat them differently. You can't just blast them the same way you blast someone who signed up last week. Luna: So the age of permission isn't just about cleaning — it's about segmentation strategy. You might want to send older subscribers more exclusive offers or loyalty content. Lucas: Exactly. Maple & Pine found that their aged segment had a higher average order value when they did open. So instead of trying to increase their open rate, they optimized for when those subscribers actually engaged. They sent a 'VIP access' email once a month that had a 24-hour flash sale. Open rate was still only around 15 percent, but the conversion rate on those opens was 8 percent — compared to 3 percent for the fresh segment. Luna: That's a great example of working with the behavior you have rather than trying to force people into a pattern they've already opted out of. Lucas: Exactly. And it's something anyone can do. Even with a small list, you can start tracking signup date in your email platform. Most tools like Mailchimp, Klaviyo, or ConvertKit already capture that data. You just have to use it. Luna: Speaking of using something — if this conversation sparked something you want to try in your own email strategy, that's exactly what we hope for. And if you find these episodes useful, the way we keep them ad-free and focused is through listener support. You can find that at buy me a coffee dot com slash fexingo. No pressure, just a way to keep the conversations going. Lucas: Yeah, it really does help. So back to permission age — one more thing I want to mention. If you're planning a re-permission campaign, timing matters. Don't do it during a holiday sales push. You'll get a lot of clicks from people who just want the discount, not from people who actually want your emails. Luna: Smart. So pick a low-key period, maybe mid-February or mid-September, when inboxes are less crowded. Lucas: Exactly. And be clear in your re-permission email about what they'll get. 'You'll receive our weekly newsletter with tips and exclusive offers.' That way, when they click, they know what they're signing up for. Luna: So the big takeaway: permission isn't a one-time thing. It's a relationship that needs maintenance. And the age of that permission is a really useful lens for deciding how to communicate. Lucas: Couldn't have said it better. Next time you're looking at your email metrics, run that cohort report by signup date. You might be surprised by what you find.