Photo via Fast Company
As artificial intelligence increasingly dominates workplace communication, a counterintuitive startup is asking: what if your emails were intentionally imperfect? Sinceerly, a new browser extension created by Harvard Business School student Ben Horwitz, flips conventional business writing wisdom on its head by deliberately inserting typos and casual language into overly polished messages. The tool offers three editing levels—subtle, human, and CEO—each progressively more casual, reflecting a growing cultural observation that perfectly written emails often signal automated composition rather than genuine human thought.
Horwitz's creation emerged from frustration with the unmistakable tone of AI-generated business correspondence. According to Fast Company, the tool condenses verbose AI-drafted paragraphs while introducing deliberate errors and casual abbreviations. In a telling case study, Horwitz sent intentionally imperfect emails to five Fortune 500 executives and received responses from four of them—suggesting that casual authenticity may outperform polished professionalism in today's inbox culture.
The paradox underlying Sinceerly's concept isn't lost on its creator: he built an anti-AI tool using AI itself, leveraging Claude and ChatGPT to accelerate development from concept to launch in just one month. This irony highlights a broader business lesson about AI's actual value proposition—not generating the initial idea, but dramatically compressing the timeline from conception to market deployment. Email marketing data supports the approach: one industry analyst cited a 40% increase in open rates when typos were intentionally added to subject lines, as recipients perceived them as human-authored.
For Nashville-area businesses navigating the tension between efficiency and authenticity, Sinceerly's emergence signals a shifting calculus around workplace communication. As professional fatigue with AI-generated content grows, companies face a strategic choice: continue optimizing for polish, or strategically incorporate human imperfection as a competitive differentiator. Horwitz charges $4.99 monthly after a three-email free trial, positioning the tool as both commentary and legitimate business solution in an increasingly skeptical marketplace.