Be sinceerly human – AI to undo your AI writing
Source: Hacker News
AI to undo your AI writing.
3 free emails. No credit card.
Product
Three levels. One slider.
Original email (AI slop)
I wanted to reach out to express my interest in connecting regarding potential synergies between our organizations. I believe there is significant value in exploring how we might collaborate moving forward. Please let me know if you would be available for a brief call at your earliest convenience.
After Sinceerly (human ✓)
Subtle – Human – CEO
How it works
- Open Gmail – Click the Sinceerly icon.
- Write your email – Draft normally. Use AI for the first version or write it yourself.
- Click the icon – The Sinceerly panel appears inside the compose window. Hit humanize.
- Review & replace – Yellow highlights show every change. Approve and replace with one click.
Pricing
Free
$0 forever
- 3 free email rewrites
- All three intensity levels
- Works inside Gmail compose
- Yellow change highlights
Pro (most popular)
$4.99 per month
- Unlimited rewrites
- All three intensity levels
- All 3 levels run in parallel, switching is instant
- Cached results so reopening is instant
Bring Your Own API Key (BYOK)
Have an Anthropic API key? Use it directly in the extension settings. Your email text never touches our servers. Every call goes straight from the extension to Anthropic. Pay only for what you use.
Built to keep your emails yours
- ✓ All requests sent over HTTPS. Emails are never stored.
- ✓ We don’t log or retain your email content.
- ✓ BYOK API keys stay in your browser only.
- ✓ We only see the text you choose to humanize.
About the founder
Hi, I’m Ben. I got sick of everyone in my inbox sounding like AI, so I built Sinceerly. I tested Sinceerly by cold‑emailing 5 Fortune 500 CEOs. Four CEOs replied; each reply was under 10 words, two had typos, and one called me Larry (my name is Ben).
LMK what you think.
![i miss when we typed liek this]