Latest / The Copywriting Podcast with Fexingo: Sales Letters, Headlines, and Persuasive Writing
How a Single Comma Changed a Billion-Dollar Headline
In this episode, Lucas and Luna dissect a 1963 direct mail test by Claude Hopkins that hinged on a single comma. They trace how that punctuation mark shifted perceived value—and how a modern A/B test at a financial newsletter company confirmed the same principle. Listeners learn why commas in headlines create a 'pause of authority' and how to use that pause to boost response rates. The hosts walk through a before-and-after example from a real 2025 client campaign, showing a 62 percent lift in click-through rate. They also discuss the neuroscience of reading pauses and why the brain…
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