{"id":99773,"title":"Letterbook - AI Customer Support Built for Startups","tagline":"Connect your inbox, database, and Stripe. AI resolves your customer service tickets.","body":"Hey everyone, we’re Dawson and Ethan, the founders of Letterbook.\n\n![uploaded image](/media/?type=post\u0026id=99773\u0026key=user_uploads/1399924/882cde5c-ce40-4fa9-ac07-a8b8104f3fa9)\n\n## The Problem\n\nWe grew our last product, Martin (an AI personal assistant), to 100,000 users. At one point, we'd get 50 customer support tickets every day, across email and help forms:\n\n* \"How do I use this feature?\"\n* \"Can I get a refund?\"\n* \"I can't log into my account.\"\n\nI had no choice but to hire a virtual assistant in the Philippines to reply to users and solve billing issues. I had to use Zendesk to manage tickets, which was built 20 years ago and designed for a VP of Support, not a founder.\n\n## The Solution\n\nNone of this made sense, so we built our own modern, AI-native support platform.\n\nLetterbook integrates with your database, knowledge base, and Stripe, and our AI auto-prepares resolutions to every ticket. All you have to do is review and send.\n\nWatch our launch video: \u003chttps://youtu.be/S1vNoMTcKoI?si=sFwRk9Hpu95ibeqm\u003e\n\n## Results\n\nWe’ve already replaced Intercom, Zendesk, Zohodesk, Helpscout, and Freshdesk for many fast-growing companies in YC. \n\nOne founder said:\n\n\u003e The AI drafts save us so much time, and it gets better over time without us doing anything (it learns from our past emails). When we have to make changes to the draft, the CMD+k feature is a game changer and allows us to fine-tune the response without copying and pasting the entire thread to ChatGPT.\n\n## Try it for free\n\nSign up at \u003chttps://letterbook.ai\u003e!\n\nStart resolving tickets in 3 easy steps:\n\n1. Connect your [support@yourdomain.com](mailto:support@yourdomain.com) inbox.\n2. Connect your database and/or Stripe by pasting a restricted API key in Letterbook.\n3. Review the first draft and send it!\n\nUnlike Zendesk/Freshdesk/Zohodesk, which takes days to set up (a friend literally hired a consultant to teach him), Letterbook takes 5 mins. And if you need help, you better believe we have top-notch customer support!\n\nYou can book a call anytime at [letterbook.ai](http://letterbook.ai), or email me at [dawson@letterbook.ai](mailto:dawson@letterbook.ai).","slug":"PxF-letterbook-ai-customer-support-built-for-startups","created_at":"2026-04-15T03:49:20.289Z","updated_at":"2026-05-25T01:33:23.246Z","total_vote_count":8,"url":"https://www.ycombinator.com/launches/PxF-letterbook-ai-customer-support-built-for-startups","share_image_url":"https://www.ycombinator.com/media/?type=post\u0026id=99773\u0026key=user_uploads/1399924/882cde5c-ce40-4fa9-ac07-a8b8104f3fa9","company":{"id":29160,"name":"Letterbook","slug":"letterbook","url":"https://www.letterbook.ai/","logo":"https://bookface-images.s3.amazonaws.com/small_logos/c6c57e5c710ca16dd9d6aada5b18cbe7dbed8be8.png","batch":"Summer 2023","industry":"Consumer","tags":["Artificial Intelligence","Customer Service","Customer Support"],"search_path":"https://bookface.ycombinator.com/company/29160"}}