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Letterbook
AddedJun 25, 2026
UpdatedJul 6, 2026
Letterbook

Letterbook

Pre-Seed

Letterbook is an AI-native customer support platform that drafts replies and automates ticket workflows.

HQ
San Francisco, CA, US
Accelerator
Y Combinator logoY CombinatorS23
Overview
Compare
Fundraising
Employees

Letterbook provides an AI-native helpdesk that connects email, Discord, API-based channels, databases, and Stripe so support teams can triage, auto-assign, and resolve tickets with AI-drafted replies and one-click actions for refunds, cancellations, and plan changes. Its platform also includes an auto-generated knowledge base, a hosted help center, and analytics to track support operations.

The product is built for fast-scaling startups and small teams, positioning itself as a lighter, AI-first alternative to legacy helpdesks such as Zendesk, Freshdesk, Zoho Desk, Help Scout, and Intercom. It charges recurring subscription fees through tiered seat-and-ticket SaaS plans.

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Letterbook - Quick Facts

Who are Letterbook's competitors?

Companies similar to Letterbook include Namecard.ai, Open, Parahelp and AptEdge.

Where is Letterbook's headquarters located?

Letterbook's headquarters is located in San Francisco, CA, US.

When was Letterbook's last funding round?

Letterbook's most recent funding round was for $500k (USD) in July 2023.

How much has Letterbook raised to-date?

As of Jul 11, 2023, Letterbook has raised a total of $1M (USD).

How many employees does Letterbook have?

Letterbook has 3 employees as of Mar 8, 2024.

Letterbook - Classification

Ownership
  • Venture Capital
Technology
  • AI
  • Machine Learning
Geographic Exposure
  • Global
Revenue
  • Recurring
  • SaaS
Customer
  • Consumers
Main Product
  • AI Assistant
Tags
  • Chatbot
  • GenAI
NAICS
  • 330000Manufacturing
SIC
  • 3900Miscellaneous Manufacturing Industries