Latest / The Copywriting Podcast with Fexingo: Sales Letters, Headlines, and Persuasive Writing
How a Nine-Word Guarantee Lifted Response 74 Percent
In this episode, Lucas and Luna dig into a 1963 direct mail test that transformed a simple nine-word money-back guarantee into a 74 percent response lift for a financial newsletter. They trace how the wording shifted from passive to active, why specificity beat vague reassurance, and what that 60-year-old lesson means for today's landing pages, SaaS trials, and checkout flows. Lucas breaks down the exact nine words and the psychology behind them — reducing perceived risk, pre-empting buyer objections, and turning a guarantee into a selling point rather than fine print. Luna challenges…
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