HumanLetter: Certify Your Human Touch.
In a world of AI-generated content, prove your emails are genuinely human-written. Build trust with every message.
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HumanLetter - Prove Your Cold Emails Are Human-Written
HumanLetter is the first Gmail extension that certifies your emails are written by humans, not AI or automation tools. Boost your cold email response rates by 58% with verified authenticity certificates!
🚀 Increase Response Rates by 58%
Stand out in crowded inboxes by proving your emails are personally crafted. Recipients trust human-written messages more, leading to dramatically higher engagement and response rates.
✅ Instant Human Verification
Our advanced detection technology automatically verifies that your emails are written by a human in real-time. No setup required - just compose naturally in Gmail and we handle the rest.
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