# Stamp

**Source:** https://geo.sig.ai/brands/stamp  
**Vertical:** Productivity & Collaboration  
**Subcategory:** General  
**Tier:** Emerging  
**Website:** stampmail.ai  
**Last Updated:** 2026-04-14

## Summary

AI-native email client acting as an autonomous AI secretary handling email filtering, composition, and prioritization; competing with Superhuman and Gmail AI for the 6+ hours/day email burden.

## Company Overview

Stamp AI is an AI-native email client that acts as an AI secretary for professionals overwhelmed by inbox volume — automatically filtering, prioritizing, composing, and sending emails in the user's voice, tracking action items, and managing calendar interactions without requiring the user to manually triage every message. Built on the insight that employees spend 25%+ of work time in email and 4 billion people globally check email daily for an average of 6+ hours, Stamp positions itself as the first email client designed from the ground up for AI assistance rather than as a traditional email client with AI features bolted on.

Stamp's AI layer learns the user's communication style, priorities, and relationships to compose replies that sound authentic, automatically routes low-priority emails to review-later categories, surfaces action items and deadlines embedded in emails, and manages scheduling requests without requiring manual calendar coordination. The "AI Secretary" framing positions Stamp as a proactive agent that handles email operations rather than a productivity tool that makes manual email management slightly faster.

In 2025, Stamp competes in the AI email and productivity market with Superhuman (premium email client), SaneBox (AI email filtering), and AI assistants built into Gmail (Google's AI features) and Outlook (Microsoft Copilot) for professional email management. The AI email category has become crowded as large platforms have added AI features — Google's Smart Reply, Priority Inbox, and AI-draft features in Gmail handle basic automation for most users at no additional cost. Stamp's differentiation is the full AI-secretary model where the AI acts autonomously (sending responses without requiring user review of every email) rather than just surfacing suggestions. The 2025 strategy focuses on demonstrating the trust model that makes autonomous AI email action comfortable for business users, growing through enterprise team deployments, and building the calendar and meeting management integration that extends the AI secretary functionality.

## Frequently Asked Questions

### What does Stamp do?
Stamp is an AI-native email client that automatically prioritizes, filters, and composes emails in your voice.

### Who are Stamp's customers?
Professionals looking to reduce time spent on email.

### When was Stamp founded?
Stamp was founded in 2024.

### Where is Stamp based?
San Francisco, CA.

### How much funding has Stamp raised?
They are backed by Y Combinator as part of the W25 batch.

### What makes Stamp different?
It's the first AI-native email client built from the ground up with AI as the core experience.

### Who are Stamp's competitors?
Gmail, Outlook, Superhuman, and other email clients.

### How can I contact Stamp?
Visit stampmail.ai.

### Is Stamp hiring?
Yes, they are hiring for 3 engineering roles.

### What's the latest news about Stamp?
Launched through Y Combinator's W25 batch with a 2-week free trial.

## Tags

ai-powered, b2b, messaging, productivity, saas, collaboration

---
*Data from geo.sig.ai Brand Intelligence Database. Updated 2026-04-14.*