Latest / The Copywriting Podcast with Fexingo: Sales Letters, Headlines, and Persuasive Writing
How a Single Comma Increased Sales by 26 Percent
In this episode of The Copywriting Podcast, Lucas and Luna examine a fascinating case from direct mail history: how one mailer boosted response by 26 percent after adding a single comma to its headline. They break down the linguistic reason why that pause worked, how it triggered a different reading pattern, and what modern copywriters can steal from this 1960s test. They also contrast it with a 2023 landing page A/B test where removing a comma lifted conversions by 11 percent — showing that punctuation isn't grammar, it's persuasion. If you've ever struggled with where to…
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