Latest / The Copywriting Podcast with Fexingo: Sales Letters, Headlines, and Persuasive Writing / How a Five-Cent Stamp Changed Copywriting Forever
Transcript
- Lucas: We talk a lot on this show about the craft of writing copy — the headline, the body, the guarantee, the P.S. But we’ve never talked about the thing that literally forced copywriters to make every word count. I’m talking about the postage stamp. Luna: The postage stamp? Like, the little square you lick? Lucas: Exactly. In 1952, the U.S. Postal Service raised the first-class stamp from three cents to five cents. That doesn’t sound huge, but for direct mail — which was the backbone of advertising back then — it was existential. Every extra ounce of paper cost another cent. Suddenly, a four-page sales letter wasn’t just a creative choice; it was a financial liability. Luna: So copywriters had to cut fat. That actually sounds like a good thing. Did response rates suffer? Lucas: Surprisingly, no. In fact, many mailers reported that shorter, tighter letters actually outperformed the long-winded ones. And it wasn’t just about saving weight — it was about a new kind of discipline. The five-cent stamp effectively created a constraint that forced writers to prioritize. They had to ask: what is the minimum amount of copy needed to get the sale? Luna: I’m thinking about the old direct mail rule — the longer the letter, the better the sale. That was the gospel for decades. So the stamp basically broke that rule. Lucas: It did. And it wasn’t just the length of the letter. It changed how writers thought about the envelope itself. Before 1952, a lot of mailers used big, bulky envelopes with lots of teaser copy. But with the rate hike, they moved to smaller, lighter envelopes. That meant the teaser had to be even sharper. And the headline — well, the headline had to do more of the heavy lifting. Luna: So the stamp influenced the headline. That’s a connection I’ve never made. What about the P.S.? We did an episode on how the P.S. lifts conversions by 42 percent. Did the stamp affect that too? Lucas: Absolutely. The P.S. became even more crucial because it was essentially a second headline at the lowest cost. If you couldn’t afford a third page, the P.S. had to do double duty. And many copywriters started using the P.S. to restate the offer, not just add a footnote. Luna: It’s interesting — we think of direct mail as this old-fashioned medium, but the constraints of the postal system actually mirror what we deal with today. Character limits on Twitter, subject line previews on mobile — you’ve got a tiny window to hook someone. Lucas: Exactly. The five-cent stamp is the 1952 version of Twitter’s 140-character limit. Both force you to edit ruthlessly. And there’s a specific example from the time: a company selling insurance by mail tested a two-page letter against a four-page letter. The two-page version — which fit in a lighter envelope — actually had a 30 percent higher response rate. The shorter letter didn’t just save postage; it sold more. Luna: So the constraint made the copy better. That’s a lesson we keep rediscovering. Every time we get a new medium — email, social, SMS — we start by writing too much, then we learn to cut. Lucas: And the stamp also changed how copywriters thought about the offer. If you only have two pages, you can’t bury the lead. You have to put the offer front and center. And you have to make it compelling immediately. The old technique of warming up the reader with a story, then hitting them with the offer on page three — that died with the five-cent stamp. Luna: It’s almost like the postal service did copywriters a favor by raising rates. Forced innovation. Lucas: Right. And some writers adapted brilliantly. There’s a famous case from a mail-order publisher in Chicago. They sold a book on gardening. Their old letter was three pages, filled with testimonials and descriptions. When the rate hike hit, they cut it to one page — just a strong headline, a short body, a bullet list of benefits, and a P.S. with the guarantee. The one-pager outperformed the three-pager by 50 percent. Luna: So the lesson is: don't just cut for the sake of cutting, but let the constraint guide your structure. Make every element earn its place. Lucas: Exactly. And that’s the takeaway I want listeners to hold onto. Before your next piece of copy — whether it’s an email, a landing page, or a social post — impose an artificial constraint. Limit yourself to two inches of space. Or one paragraph. Or a three-second read. See what happens to your conversion. Luna: It’s like Hemingway said: 'Write drunk, edit sober.' The stamp forced the editing before the ink hit the paper. Lucas: I think the stamp also changed how copywriters thought about the envelope — the 'outside' copy. Before, they’d cram as much teaser copy as possible onto the envelope. But with the lighter envelope, they realized that less is more. One famous mailer in the 1950s tested an envelope with just the return address and a single line: 'Open this envelope if you want to save money.' That beat an envelope covered in bullet points. Luna: So the stamp basically invented the modern direct mail envelope. And by extension, it shaped how we think about email subject lines — short, intriguing, no filler. Lucas: Precisely. And here’s another angle: the stamp rate hike also killed the 'long copy' orthodoxy that had ruled since the days of John Caples. Caples himself, who we’ve talked about on the show, famously wrote long copy that worked. But even he adapted. In the late 1950s, he wrote a two-page letter for a correspondence school that tested against a four-page version he’d written earlier. The two-page version won. Luna: So even the masters had to evolve. That’s humbling. It also shows that copywriting isn’t about eternal rules — it’s about responding to the medium and the moment. Lucas: That’s the deeper truth. The five-cent stamp was a specific historical event, but the lesson is timeless: constraints are creativity’s best friend. When you have unlimited space, you tend to ramble. When you’re paying per ounce, you write tighter. And that often sells better. Luna: Before we go further — I want to acknowledge something. If today’s episode gave you a new way to think about your own copy, or even just a useful historical tidbit, that’s exactly why we do this show. And the way we keep it ad-free and focused is through listener support. So if you found value, consider buying us a coffee — literally — at buy me a coffee dot com slash fexingo. It helps us keep digging up stories like this. Lucas: Yeah, genuinely. We don’t run ads because we want these episodes to be pure — no sponsor breaks interrupting the flow. If you’ve ever used a tip from the show and it worked, that coffee link is how you keep the cycle going. No pressure, just a thank you. Luna: Alright, back to stamps. So we’ve talked about the 1950s. But did the stamp rate ever change again in a way that affected copy? Lucas: It did. In 1971, the stamp went from six to eight cents. That was another big jump. And again, mailers had to tighten. But by then, most direct mail had already adapted to the shorter format. The real shift was in how they used the P.S. — it became a standard tool, not an afterthought. And the envelope copy became almost like a mini-billboard. Luna: It’s funny — we think of the P.S. as this clever technique, but it was literally born from cost pressure. Necessity is the mother of conversion. Lucas: Exactly. And there’s a modern parallel. When email became the dominant channel, people started writing long emails. Then mobile happened, and now we’re back to short, punchy copy. The constraint is the screen size, not the stamp, but the psychology is identical. Luna: So the takeaway for today’s copywriter: find your constraint. Maybe it’s a character count. Maybe it’s a budget. Maybe it’s a deadline. Use it to sharpen your message. Lucas: That’s the episode. One stamp, one rate hike, and a whole new way of thinking about persuasion. Next time you write a headline, think about what you’d cut if you had to pay for every word.