# Letterbook > AI-native customer support that resolves tickets automatically. Letterbook is an AI support agent for startups and fast-growing teams. Connect your inbox, database, and Stripe account, and Letterbook starts resolving customer tickets in minutes — not weeks. ## Key Features - **Scenario-based playbooks**: Define instructions for handling different types of customer requests. The AI follows your playbooks to draft accurate replies. - **Review-and-send workflow**: Every AI-drafted reply goes through your review before sending. Provide feedback to improve quality over time. - **Self-updating knowledge base**: Letterbook learns from every resolved ticket, building a knowledge base that keeps getting better. - **Analytics**: Track resolution time, automation rates, and customer satisfaction in one dashboard. ## Integrations - Email inboxes - MongoDB - Supabase - Postgres database - Discord - Stripe (order and subscription lookups) ## Who It's For Startups and fast-growing teams that want to scale customer support without hiring and training additional staff. Letterbook gets up and running in 15 minutes. ## Links - Website: https://letterbook.ai - Pricing: https://letterbook.ai/pricing - Blog: https://letterbook.ai/blog - Documentation: https://letterbook.ai/docs - Authenticated ticket form submissions: https://letterbook.ai/docs/user-portal/authenticated-ticket-forms - Contact: https://letterbook.ai/contact - Terms: https://letterbook.ai/terms - Privacy: https://letterbook.ai/privacy