Stamp

Active

The AI Secretary for Email and Calendar.

Winter 2025Founded 20241 peopleSan Francisco, CA, USA

www.stampmail.ai/ ↗LinkedIn ↗X ↗See on the Idea Map B2B momentum

About

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.

From their website

as of Jun 7, 2026www.stampmail.ai ↗

SubscriptionSubscription · Pricing plans: Hobby (Free) with 30-day trial; Personal $20/month; Business $50/month. Billing interval options: Monthly or Yearly (20% off).

Stamp is an AI-powered secretary for email and calendar that drafts replies, prioritizes, and schedules using learned preferences and context. It offers a mobile app and a hands-free Stamp Mode to streamline inbox and calendar tasks for individuals and teams.

Stamp analyzes emails and calendar data to automatically draft replies, categorize messages, and schedule events. It learns user preferences via Memories (personalized context about you and contacts), AI Labels (configurable rules for handling emails), and Context Search (understanding writing style and availability). Users can preview and approve Stamp's drafts, delegate work via Stamp Mode, and use features like long-term memories, web search, and voice/messaging to control actions. It integrates across connected email accounts, provides a mobile app, and offers layered usage through plans with defined quotas and unlimited memories per tier.

Who it’s for: Individuals and teams seeking an AI assistant to manage email and calendar workloads, from hobbyists/startups to mid-sized businesses and enterprises.

Features

Automatic email drafting
Context-based replies and summaries
Email prioritization and categorization
Calendar scheduling and availability awareness
Memories and long-term personalization
AI Labels for rule-based handling
Voice mode and mobile access

Marketing and pricing pages; multiple feature updates; 2026 product launch/availability information; clear pricing tiers and trial offer indicating active user acquisition and product traction.

Founders · 1

Archit MehtaFounder

Stripe

Stamp CEO. Previously graduated at 20, built products with 50k+ users, Software Engineer at Stripe.

LinkedIn ↗

Launch

Launched on Y Combinator · Feb 2025

View launch post ↗

The First AI Native Email Client

Stamp is an AI-native email client that writes emails in your voice, prioritizes inbox items automatically, and extracts key action items and summaries for each email. It targets users overwhelmed by high email volume and offers free use for 1 year for sign-ups during the launch.