In an intriguing twist within the tech landscape, a new tool has surfaced: an AI application designed to “undo” AI-generated writing.
Sinceerly is a Google Chrome extension that allows users to edit emails—whether they are generated by AI or penned by humans. Its purpose is to introduce errors typically eliminated by AI tools and to alter prominent indicators of AI text, such as phrases like “not just X, but Y.” Em dashes, which I personally appreciate as a writer, are also flagged as potential signals of AI influence. However, since Sinceerly explicitly removes the em dash, it’s clear that the tool carefully targets these nuances.
This innovative tool offers three modes: subtle, human, and CEO. Each mode adjusts the tone of the text, with “CEO” mode featuring an informal style that neglects proper punctuation but humorously includes “Sent from my iPhone.”
Mashable Light Speed
Sinceerly provides three free rewrites for emails and is compatible with Gmail. For a subscription fee of $4.99 per month, users can enjoy unlimited rewrites, seamless mode switching, and the ability to cache results for quick access.
The tool was developed by Ben Horwitz, an investment partner at the venture capital firm Dorm Room Fund.
The notion of relying on AI to create text, only to have another AI tool refine it to sound more human, borders on the absurd. Yet, it may reflect the prevailing sentiment towards AI-generated content in 2026. Recently, major publisher Hachette dropped the novel Shy Girl due to claims of AI generation and issues with its quality.
Perhaps the simplest solution would be to—gasp—craft the text yourself.
Topics
Artificial Intelligence
