Latest / The Email Marketing Podcast with Fexingo: Newsletters, Open Rates, and Subscriber Growth / How Email Frequency Shapes Subscriber Loyalty
Transcript
- Lucas: Let’s talk about the invisible tax we charge our subscribers every time we hit send. Most marketers are obsessed with volume, treating their inbox like a billboard where more impressions equal more revenue. But there is a growing body of evidence suggesting that frequency is actually the single biggest driver of unsubscribe rates and long-term churn. Luna: That sounds counterintuitive if you’re trying to stay top of mind. Isn’t visibility the currency here? Lucas: Visibility is only valuable if it doesn’t feel like intrusion. I’ve been looking at some internal benchmarks from a mid-sized apparel retailer that decided to slash their weekly sends from five emails to two last quarter. The immediate reaction from their team was panic, assuming revenue would plummet. Luna: And did it? Or did something else happen? Lucas: Revenue per recipient actually jumped by eighteen percent. Not because they charged more, but because the remaining emails were opened at nearly double the previous rate. They stopped shouting and started whispering, and people finally listened. Luna: So the quality of attention outweighed the quantity of touches. That’s a classic signal to noise ratio problem. Lucas: Exactly. And it’s not just about the math. It’s about psychological contract. When a brand sends too much, it signals desperation or poor organization. When they send less, they signal respect for your time. That builds a different kind of equity in the relationship. Luna: But what about the brands that thrive on daily updates, like newsletters or stock tickers? Does this rule apply to them too? Lucas: Good point. For utility-driven content, daily is expected. If I pay for a market summary, I want it every morning. But for promotional or lifestyle content, the expectation is lower. The mismatch between utility and frequency is where most brands get burned. Luna: So the key is aligning the send schedule with the user’s mental model of the brand. Lucas: Precisely. Let’s look at the mechanics of fatigue. Every email you send is a small request for cognitive load. Even a simple one-liner asks the brain to process, decide, and dismiss. Do that enough times, and the brain starts filtering you out automatically. Luna: It’s basically habituation. The brain stops noticing the stimulus because it’s constant. Lucas: Right. And once that happens, you’re fighting an uphill battle against your own infrastructure. Gmail and Outlook start putting your emails into the promotions tab or the social folder, which kills click-through rates before the subscriber even sees the subject line. Luna: So reducing frequency isn’t just about keeping the subscriber happy; it’s about staying out of the spam filters. Lucas: It’s both. Sender reputation is tied to engagement metrics. If you send five emails and only one person clicks, your reputation tanks. If you send one email and three people click, your reputation soars. The algorithm rewards relevance, not volume. Luna: That’s a huge shift from the old playbook. Back in the day, you could brute-force your way into the top of the inbox. Lucas: Brute force doesn’t work anymore. The algorithms are smarter now. They track dwell time, reply rates, and mark as spam flags. A high-frequency sender who gets zero replies is flagged as low-value faster than a low-frequency sender who gets engaged conversations. Luna: So how do you find that sweet spot? Is there a formula? Lucas: There’s no universal number, but there is a diagnostic test. Look at your unsubscribe rate relative to your send count. If you send twice a week and your unsubscribe rate is above two percent, you’re likely over-sending. If you send monthly and it’s below one percent, you might be under-utilizing your channel. Luna: So you calibrate based on tolerance, not just vanity metrics like open rates. Lucas: Open rates are misleading because of pre-read features and privacy protections. Unsubscribes and complaints are honest feedback. They tell you exactly where the line is drawn between helpful and annoying. Luna: It feels risky to cut back though. What if you lose momentum? Lucas: Momentum is an illusion. You can have high activity and low impact. Real momentum comes from anticipation. When you send less, each email becomes an event. People start checking for it rather than ignoring it. Luna: Like a favorite magazine column instead of a junk mail flyer. Lucas: That’s the perfect analogy. You don’t toss the New Yorker into the trash every Tuesday because it arrived. You keep it on the coffee table. That’s the level of placement you want. Luna: Does this work for B2B as well, or is it mostly a B2C phenomenon? Lucas: It works harder in B2B. Decision-makers are bombarded with sales pitches all day. An email that arrives once a month with genuine insight is a breath of fresh air. It positions you as a partner, not a pest. Luna: So scarcity creates value in the corporate inbox too. Lucas: Absolutely. In fact, many enterprise sales teams are now advised to limit cold outreach to one touch per week per prospect. Anything more triggers defensiveness. Luna: I’ve definitely unsubscribed from newsletters that promised 'daily tips' and then delivered fluff. It felt like a chore. Lucas: That’s the trap. Promising daily content forces you to produce daily content, which often dilutes quality. Better to promise weekly deep-dives and deliver excellence than daily snippets and mediocrity. Luna: It’s about managing expectations. Under-promise and over-deliver. Lucas: Or better yet, set the expectation correctly from the start. Tell them, 'We send one insightful email every Thursday.' Then deliver on that consistently. Luna: Consistency beats intensity. I think that’s the core takeaway here. Lucas: Exactly. Consistency builds trust. Intensity burns bridges. If you want to grow your list organically, focus on making each send worth opening, not just ensuring it lands. Luna: It’s a discipline issue. It’s hard to sit still and wait for the right moment to speak. Lucas: It is. But silence is also a message. It says you have something important to say, so you don’t waste words. That confidence resonates with subscribers. Luna: I’m going to try cutting my personal newsletter from twice a week to once a week next month. See if the engagement holds. Lucas: Do it. And watch the reply rate. I bet you’ll see more substantive conversations come through. Luna: If these marketing conversations have sparked something you've actually used, consider supporting the show directly. We deliberately don't run ads on these episodes, and listener support is what keeps that choice possible. You can help us keep the signal clear by visiting buy me a coffee dot com slash fexingo. Lucas: Yeah, we appreciate anyone who wants to chip in. It really does make a difference in maintaining the independence of the network. Luna: Thanks for considering it. Now, back to that experiment—how will you measure the success of the reduced frequency? Lucas: I’ll track the complaint rate and the click-through rate on the remaining emails. If those go up, even if total opens drop slightly, the health of the list is improving. Luna: Quality over quantity. It seems so simple, but so few execute it. Lucas: Because it requires restraint. And in marketing, restraint is the rarest commodity of all.