Ben Horwitz launches Sinceerly Chrome extension to humanize AI-generated emails

6 articles · Updated · Mashable · Apr 25

Sinceerly offers three modes—subtle, human, and CEO—each increasing the level of casual errors, and is free for three Gmail rewrites or $4.99 per month for unlimited use.
The tool removes common AI writing cues, such as em dashes and formulaic phrases, aiming to make text appear authentically human and less robotic.
Developed by Dorm Room Fund partner Ben Horwitz, Sinceerly satirizes the prevalence of AI-generated content, reflecting growing skepticism about AI-authored writing in 2026.

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