Latest / The Copywriting Podcast with Fexingo: Sales Letters, Headlines, and Persuasive Writing / How a Single Question in a Sales Letter Lifted Conversion by 34 Percent
Transcript
- Lucas: So there's this fundraising letter that went out maybe six years ago from a mid-sized nonprofit — one of those clean-water-in-Africa organizations. Standard A-B test: control versus a version with one tiny change. Luna: Let me guess — they swapped the headline? Lucas: Nope. They left the headline alone. They left the story alone. They even kept the same call to action button. All they did was add one two-sentence question right before the donate-now section. Luna: And that lifted conversion by 34 percent. I've seen the data — it's a well-known test in direct-response circles. Lucas: Exactly. The question was: 'If you knew that one dollar could give a child clean water for a month, what would you do?' And then immediately below: 'Enter your gift amount below.' Luna: It's almost too simple. But that question forced the reader to mentally answer — to imagine themselves making that decision. Lucas: Right. And that's the mechanism. A question creates what psychologists call a 'curiosity gap' — a gap between what you know and what you want to know. In this case, the reader already knows the dollar amount and the impact. The question makes them supply the answer. Luna: It's a form of self-persuasion. They convince themselves to give, rather than being told to. Lucas: And that's a crucial distinction. When you tell someone 'Donate now,' they feel a sales pitch coming on. When you ask 'What would you do?' they feel like they're in control. Autonomy is a powerful motivator. Luna: So where did this technique originate? I've seen it in old direct mail from the 1920s. Lucas: You're probably thinking of Claude Hopkins. In his book 'Scientific Advertising,' he talks about a question he used for a toothpaste ad — he asked 'Why do you have that dingy film on your teeth?' before introducing the product. That question created a specific problem in the reader's mind. Luna: And then he offered the solution. The question opened a mental door. Lucas: Exactly. But the modern version is subtler. In the fundraising letter, the question doesn't highlight a problem — it highlights a choice. And that choice is framed in a way that makes the ethical answer obvious. Luna: It's almost a rhetorical question, but not quite. A true rhetorical question doesn't expect an answer. This one does — even if only in the reader's head. Lucas: Right. And that's why it works. If you ask 'Can you spare five dollars?' the answer is 'Yes' or 'No.' That's a binary choice. But 'What would you do?' is open-ended — it forces the reader to construct a scenario. Luna: And in constructing that scenario, they imagine themselves giving. That mental rehearsal increases the likelihood of actual action. Lucas: There's a 2014 study from the Journal of Consumer Research that backs this up. They found that asking people 'Will you be a voter?' before an election increased turnout by about 11 percent compared to a standard 'Please vote' message. The question form triggered a self-identity response. Luna: So the question primes an identity. 'Will you be a voter?' makes you think 'I'm the kind of person who votes.' Similarly, 'What would you do?' makes you think 'I'm the kind of person who helps.' Lucas: Exactly. And that brings us to an interesting point about where to place the question. In the fundraising letter, it was right before the CTA. But you can also put a question in the headline, or in the opening paragraph. Luna: There's a classic example — a headline for a weight-loss product: 'How much weight do you want to lose this month?' That question immediately personalizes the message. Lucas: Right. And it makes the reader plug in their own number. That's engagement before they've even read the body copy. But the risk is that if the question feels too salesy, it triggers skepticism. Luna: So authenticity matters. The question has to feel genuine — like you're actually curious about the reader's answer, not just manipulating them. Lucas: That's the art. The best questions are the ones the reader wants to answer. They tap into a genuine curiosity the reader already has about themselves. Luna: Let me give a modern example. A SaaS company — project management software — tested a landing page. The control had a headline like 'Simplify your team's workflow.' The test version asked 'What would you do with an extra five hours a week?' Lucas: And I'm guessing the question version won? Luna: By a solid margin — 27 percent more sign-ups. Because the reader immediately starts imagining the answer: 'I'd catch up on emails, I'd take a lunch break, I'd finally start that side project.' Lucas: And the product becomes the enabler of that vision, not the solution to a problem. That's a much more positive frame. Luna: Exactly. It shifts from pain point to aspiration. And the question opens the door for the reader to paint their own picture. Lucas: So if someone wants to try this in their own copy, what's the rule of thumb? One question, placed right before the key decision point. Make it open-ended, make it personal, and make it relevant to the desired action. Luna: And test it. What works for a nonprofit might not work for a B2B software company. But the principle is worth a test in almost any sales letter. Lucas: I'd add one more thing: don't overthink the wording. The clean-water nonprofit question was only 14 words. Simple language beats clever language every time. Luna: Yeah. And if these marketing conversations have sparked something you've actually used in your own writing — maybe you've tested a question in an email or a landing page — that's exactly the kind of thing that makes running this show worth it. Lucas: We deliberately don't run ads on the podcast. That's a choice. And if that choice matters to you — if you'd like to support the ad-free approach — the link is buy me a coffee dot com slash fexingo. Luna: No pressure, genuinely. Just a way for those who find value in these episodes to keep them coming without commercial interruptions. Lucas: Okay, back to the question technique. One more example I love: a direct mail piece for a financial newsletter. The control letter opened with a story about a retired teacher who made a fortune in stocks. The test letter opened with a single question: 'What if you could retire in ten years?' Luna: And I bet that outperformed. That question hits the reader's deepest desire. Lucas: By 41 percent, actually. The newsletter company ran that test across 50,000 names. And what's interesting is that the story version was well-written — it had emotion, detail, a real person. But the question version forced the reader to project themselves into the scenario before they even knew what the newsletter offered. Luna: So the question creates a promise in the reader's mind. The rest of the letter just has to deliver on that promise. Lucas: Exactly. And if the body copy fails to deliver, the question still lingers. The reader might even seek out other information to answer it. So the question acts as a hook that extends beyond the page. Luna: That's a powerful thought. A good question doesn't just capture attention — it holds it. Lucas: So next time you're writing a sales letter, ask yourself: what's the one question my reader is already asking themselves? And then write it down for them. Luna: Make it easy for them to answer, and make it feel good to answer it. Lucas: And then let the rest of the copy be the natural next step in that conversation. Luna: That's the craft. It's not about tricks — it's about meeting the reader where they are.