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Stamp

Hiring

Stamp is a YC Winter 2025 (W25) company. Team of 1.

About Stamp

GPAgent's own fund-neutral profile, written from public information. Updated Oct 5, 2026.

Summary

Stamp builds an AI-powered email and calendar assistant for individual professionals. It drafts replies in the user's voice, prioritizes and categorizes incoming mail, tracks action items, and schedules calendar events, replacing the manual triage and composition work people do themselves today. The product learns each user's preferences through stored memories, contact history, and custom workflow rules.

Business model

A free entry point plus paid plans, as shown by the Pricing page on the site.

Go-to-market

Stamp targets individual professionals directly, with a self-serve model available via web and a mobile app, letting users sign up and connect their inbox without a sales process.

From the Y Combinator listing

How Stamp describes itself in Y Combinator's public directory. Original listing (opens in a new tab)

The AI Native Email Client

Stamp is the first AI Native inbox. It's more than an email client, though -- it's like your second brain. Stamp can respond to emails in your voice, organize your inbox to filter out the noise, keep track of action items, and automate essentially every task you're doing manually in your inbox today.

Facts

Industry
B2B / B2B -> Productivity
Team size
1
Status
Active
Stage
Early

Founders (1)

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