From signing my emails with “bet” instead of “best” or sometimes writing “felt” instead of “left”, living with dyslexia and choosing a career that requires me to write on the daily has turned typos into my biggest nightmare. After all, I’ve been taught that typos signal carelessness, unprofessionalism, or worse—lack of talent altogether. But as AI makes life seemingly more perfect, tiny errors are also signatures of our humanity—and that we put actual care into what we wrote instead of mindlessly relying on an LLM.
Well, now there’s an AI tool to that will pen a perfectly imperfect email. Sinceerly (yeah, it’s spelled that way) is an extension that makes slop emails sound more human—mistakes and all.
Ben Horwitz, an investment partner at venture capital firm Dorm Room Fund and student at Harvard Business School, created Sinceerly. Annoyed with so many emails obviously sounding like AI, Horwitz saw an opportunity to “hold up a mirror” to our complicated relationship with technology. Our typos, ourselves?
It’s satire, of course. “If we are using AI to write, then in this moment, can we use AI to un-AI our own writing?” he tells Fast Company. “That’d be funny.”
So for the last month, he used his time in between classes to code what he now calls the “anti-Grammarly.” (The misspelled name is both on brand and allowed Horwitz to purchase the domain for cheap; he is a student, after all.)
Sinceerly, which Horwitz shared on X this week, is available as a browser extension, straying not too far away from Grammarly’s interface. You can pick from three levels of edits: subtle, human, or CEO. The latter nods to the final boss of typos. Brevity and misspellings have become somewhat of a status symbol in business. CEOs are simply too busy and too important to care about punctuation, after all.
Here’s how it works: The tool rewords a long and jargony AI paragraph and condenses it per each level. For instance, a “subtly” edited five-line paragraph will condense the phrase into three lines. “Human” takes it further by adding more slang and abbreviations, and trimming even more words. CEO mode goes completely rogue:
