Latest / The Copywriting Podcast with Fexingo: Sales Letters, Headlines, and Persuasive Writing / How a Double Space Lifted Donations by 58 Percent
Transcript
- Lucas: Alright, Luna, I've got a copywriting test for you that sounds almost too small to matter, but the results are ridiculous. Luna: I'm ready. How small are we talking? Lucas: A double space. One extra blank line between the salutation and the first paragraph of a fundraising letter. That's it. The control version had the salutation — 'Dear Friend' — then immediately the body text. The test version added a single line of white space after the salutation. Luna: And that changed anything? Lucas: Changed everything. This was a direct-mail test run by a major national nonprofit back in 2005. The control pulled a 0.9 percent response rate — pretty typical for cold acquisition mail. The test version with the extra space pulled 1.42 percent. That's a 58 percent lift in response. And the average gift size also went up, from $42 to $49 — a 16 percent increase. Luna: Fifty-eight percent from one blank line. That's wild. Lucas: It is. And when you think about it, the mechanism isn't that mysterious. A line of white space changes the reader's emotional entry point. With no space, your eye drops straight from the salutation into a block of text — it feels dense, demanding, like a wall of obligation. Luna: Right, because the salutation is basically a speed bump. You pause there, then you're supposed to jump into the pitch. Lucas: Exactly. The white space gives you a tiny inhale. A beat. It signals: this letter is going to be easy to read. It respects your time. And that micro-signal of respect translates into higher trust and a higher likelihood of reading further — and eventually, giving. Luna: It's almost like the physical version of a conversational opener. If someone walks up and immediately starts asking for money, you flinch. But if they pause, make eye contact, say 'hi' first — it's different. Lucas: Perfect analogy. The white space is that pause before the ask. And the data backs it up across multiple formats. Another test — different organization, same era — compared a letter with standard paragraph spacing versus one with extra leading between every paragraph. The wider-spaced version lifted response by 23 percent. Luna: So it's not just the salutation. White space anywhere in the letter seems to help. Lucas: Generally, yes. But the salutation space is particularly powerful because it's the first thing the reader encounters after the address block. It sets the tone for the entire reading experience. And there's a cognitive load angle too. Luna: What do you mean? Lucas: When text is densely packed, the brain has to work harder to parse it — to find where lines begin and end, to separate the greeting from the content. That extra cognitive effort, even if it's just milliseconds, accumulates. By the time the reader hits the ask, they're subtly fatigued. White space reduces that friction. Luna: So the easier you make it to read, the easier you make it to say yes. Lucas: Bingo. And this isn't just a direct-mail principle. It carries over to email, landing pages — anywhere you're asking for a decision. I've seen tests where simply increasing line height in an email body from 1.15 to 1.5 boosted click-through rates by 12 to 15 percent. Luna: That makes me want to go audit every email I wrote this week. Lucas: Right? The thing is, most copywriters obsess over words — the perfect headline, the right verb. And that matters. But the visual container those words sit in is just as important. The white space is part of the copy. Luna: Have you ever run a white space test yourself? Lucas: I did, actually. About three years ago, for a client's donation page. The control was a fairly standard layout — a headline, then a block of text, then the donate button. The test added generous padding around the text block — more white space between the headline and body, and between the body and the button. Conversion rate went up 9 percent. Not as dramatic as 58 percent, but on a high-traffic page, that's meaningful revenue. Luna: And it's free. It's not like you're buying more expensive paper or paying for a designer. Lucas: Exactly. It's a zero-cost change that can have outsized impact. Now, one caveat: white space can be overdone. If you leave too much empty space, the reader might feel disconnected — like the copy is sparse or untrustworthy. There's a sweet spot. Luna: How do you find the sweet spot? Lucas: Test. But a good rule of thumb: in direct mail, one extra line space between the salutation and the first paragraph is almost never wrong. In emails, a line height of 1.4 to 1.6 is usually safe. On landing pages, aim for enough white space that the text breathes, but not so much that the page looks empty. Luna: I'm also thinking about the psychology of white space in a broader sense — like, it signals professionalism. A cluttered page looks amateurish. Clean layout looks expensive. Lucas: Absolutely. There's a reason luxury brands use tons of white space. It's not just aesthetic — it's a trust signal. It says, 'We don't need to shout. We don't need to cram. Our product speaks for itself.' That same principle applies to copy. When you give the reader room, you're telling them their time is valuable. Luna: And by extension, that you're not desperate for their money. Lucas: Exactly. Desperation reads dense. Confidence breathes. And that confidence transfers to the reader's perception of the offer. Luna: So if I'm writing a fundraising email tomorrow, what's one concrete change I should make? Lucas: Add a blank line after your greeting. Whether it's 'Dear Supporter' or 'Hi there,' give it one line of space before you launch into the story. Then increase the line spacing of the entire email body to 1.5. And if you have a postscript — which you should — give it its own space, maybe even a small horizontal rule or extra padding. Luna: And measure the difference. Lucas: Always measure. But I'd be shocked if you didn't see a lift. The 58 percent test is not a fluke — it's been replicated in different formats with similar magnitudes. Luna: Okay, I'm sold. One last thing — is there any scenario where white space might hurt? Lucas: Possibly in very short copy, like a two-sentence fundraising appeal. If the white space dwarfs the text, it can look like there's nothing there. But for anything longer than a paragraph, more space almost always helps. The risk is really about proportion — you want the space to frame the copy, not swallow it. Luna: That makes sense. And I guess the same applies to podcasting — pacing, pauses — but that's a different show. Lucas: Actually, you're right. The principle is the same. Silence is white space for the ear. But we'll save that for another episode. Luna: Well, if these copywriting deep dives are something you've put to use — maybe you added a double space to your latest email and saw a bump — that's exactly the kind of thing that keeps this show ad-free and independent. Lucas: Yeah, listener support is what makes episodes like this possible — no sponsors, no middlemen. So if today's conversation was worth a coffee to you, you know where to find us. Luna: Buy me a coffee dot com slash fexingo. That's the whole link. No pressure, just a way to keep the show going. Lucas: And speaking of going — I think the big takeaway here is that the smallest formatting detail can have an outsized impact. So next time you're staring at a blank page or a draft that feels 'off,' try breathing some space into it. You might be surprised what a little nothing can do. Luna: Well, I'm off to add a double space to my next email. Thanks, Lucas. Lucas: Happy testing, Luna. See you next time.