A new development in the tech world has appeared: an AI tool designed to “undo” AI writing. Sinceerly, a Google Chrome extension, allows users to edit AI-generated or human-written emails by introducing errors typically removed by AI tools and altering noticeable AI text “tells,” such as phrases like “not just X, but Y” and the use of em dashes. Despite my fondness for em dashes as a writer, Sinceerly states it will remove them. The tool offers three modes: subtle, human, and CEO, with each mode producing increasingly casual text. The “CEO” mode even omits correct punctuation but adds “Sent from my iPhone.” Sinceerly provides three free email rewrites within Gmail, and a $4.99 monthly subscription grants unlimited rewrites, instant mode switching, and result caching for instant reopening. Developed by Ben Horwitz, an investment partner at Dorm Room Fund, Sinceerly embodies the current sentiment towards AI-generated text in 2026. Though using AI to generate and then humanize text might seem absurd, it highlights the current perspective on AI copy. It might be easier to simply write text yourself.
New AI Tool Aims to Humanize Your Writing
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