Latest / The Copywriting Podcast with Fexingo: Sales Letters, Headlines, and Persuasive Writing / How a Handwritten Margin Note on a Typed Letter Doubled Response
Transcript
- Lucas: So, Luna, I want to talk about a direct mail test that came across my desk recently, and it's one of those results that makes you pause. Luna: I'm all ears. How big was the lift? Lucas: Over a hundred percent. A financial newsletter company — we'll keep them anonymous — sent out a standard four-page typed sales letter. Control version, about a 1.0 percent response rate, which is typical for that audience. Luna: Right, direct mail response rates usually hover around one to two percent for house lists. Lucas: Exactly. Then they tested a version where, in the bottom right corner of page three, they added a single handwritten margin note. It said — and I'm paraphrasing — 'Luna, this is the part you need to see.' With a circle around a bullet point about tax savings. Luna: Wait — they wrote 'Luna'? That's a specific name. Was it personalized to each recipient? Lucas: Great catch. Yes, they used variable data printing to insert the recipient's first name in the note. So each letter had a handwritten-style note addressed to that person. The handwritten version got a 2.1 percent response rate — more than double the control. Luna: That's a 107 percent lift. What's the psychology behind it? Is it just the personalization? Lucas: Partly, but there's more going on. Let me break it down. First, there's scarcity: handwriting is rare in a typed environment. When you open a typed letter, your brain processes it as mass-produced. But a handwritten element signals that this was made just for you. Luna: Like an invitation versus a flyer. Lucas: Exactly. Second, social proof: the note says 'this is the part you need to see' — it implies someone else has already read it and flagged the important part. That's a subtle endorsement. Third, the physical act of handwriting triggers what researchers call the 'ink authenticity factor.' A 2025 study in the Journal of Consumer Psychology found that handwritten elements increased neural activity in the prefrontal cortex — the area associated with trust and personal relevance. Luna: So it's not just novelty. It's a measurable cognitive response. Lucas: Right. The study used fMRI scans and showed that participants spent about 40 percent more time looking at the handwritten note than the typed text. That extra dwell time correlates with higher conversion. Luna: But this is direct mail. What about email? Can you replicate a handwritten margin note in an email? The format doesn't really allow for it. Lucas: Fair point. Some marketers have tried embedding handwritten-style images in emails, but the effect is weaker. The tactile element is missing. However, there's a variant that works: a handwritten-style PS. In another test by the same company, a typed PS with a handwritten signature outperformed a fully typed PS by 34 percent. Luna: That's still significant. But let's talk about cost. Variable data printing and handwriting fonts — that adds expense per piece. Is the lift worth it? Lucas: Depends on your margins. For a high-ticket offer — say, a $500 subscription — a double response rate easily covers the incremental printing cost. The company I mentioned spent roughly 15 cents extra per piece for the handwritten note. With a 1.1 percent lift in response, their cost per acquisition dropped from $50 to $24. Luna: That's a compelling ROI. So what's the practical takeaway for a copywriter listening right now? Lucas: Test a handwritten PS on your next control letter. Don't overthink it. Write something like, 'Luna, read page two first — it's the most important part.' Use a blue pen, keep it messy. The imperfection actually adds authenticity. Luna: And if you're testing email, maybe try a handwritten signature image at the bottom, or a personalized subject line that mimics a note. It's not the same, but it's worth a test. Lucas: Exactly. The key is to break the pattern of expectation. When everything looks mass-produced, a single human touch can cut through. Luna: It's funny — we spend so much time optimizing subject lines and headlines, but sometimes the biggest lever is a little scribble in the margin. Lucas: Speaking of which, if you're finding these conversations useful and you've ever applied something like this in your own work — a handwritten note, a PS test, anything — we've kept this show ad-free, and listener support is what makes that possible. If you'd like to chip in, you can find us at buy me a coffee dot com slash fexingo. No pressure at all, but every bit helps keep the podcast going. Luna: Yeah, it's a small way to say thanks if you've gotten value. And we really appreciate it. Lucas: Alright, back to the margin note. One more thing — the company tested a version where the note was in red ink instead of blue. Red ink actually performed slightly worse, by about 12 percent. Luna: Interesting. Why do you think that is? Lucas: Red ink tends to signal correction or error. In a school context, red pen means 'you got it wrong.' Blue or black ink feels more neutral, more like a friend's note. Luna: So color psychology applies even to handwriting in marketing. That's a great detail to test. Lucas: Absolutely. So to wrap up: if you're running direct mail, test a handwritten margin note on an inside page. Use blue ink, personalize it with the recipient's name, and point to a specific benefit. If you're doing email, test a handwritten signature or a PS. The pattern interruption is powerful. Luna: And keep an eye on your cost per acquisition. Even a small lift can pay off if your margins are right. Lucas: Exactly. Next time, I want to explore a test where they used a handwritten envelope — that is, the outer envelope had a handwritten address instead of a typed label. The results were even more dramatic. Luna: I'm already thinking about the open rate implications. Let's do that soon. Lucas: Great. For now, go find your control letter and grab a pen.