Top accelerator startups

Startups14,448Programs29

14,448 startups · 29 programs

Letterbook

Active · AI-native customer support platform

WebsiteYC profile

Why it ranks

How the rank works
7signal of 100 · rising 2
  • went through YCProgram · this site+4
  • team of 2Team size · YC's directory+2.5

A sum of public facts, not a judgement and not investment advice.

Competitors

AIFirstSupport.aiShared: knowledge base, customer support, ticketYC W21BandungStartup →AIChatwootShared: customer support, customer service, zendeskYC W21San FranciscoStartup →AIInactiveAtlasShared: customer support, customer service, zendeskYC W22San FranciscoStartup →OtherHiOperatorShared: customer support, customer service, ticketYC S16DallasStartup →AIOpenShared: customer support, customer service, emailYC W24AmmanStartup →OtherFinShared: customer support, intercom, emailStartup →OtherOmiliaShared: customer supportStartup →OtherCapacityShared: customer supportStartup →
Companies closest to Letterbook
Company
FirstSupport.aiShared: knowledge base, customer support, ticketYC W21ActiveAI
ChatwootShared: customer support, customer service, zendeskYC W21ActiveAI, Devtools
AtlasShared: customer support, customer service, zendeskYC W22InactiveAI
HiOperatorShared: customer support, customer service, ticketYC S16ActiveOther
OpenShared: customer support, customer service, emailYC W24ActiveAI, Devtools
Finnot in a program hereShared: customer support, intercom, emailElsewhereOther
Omilianot in a program hereShared: customer supportElsewhereOther
Capacitynot in a program hereShared: customer supportElsewhereOther

Adjacent

AIArigladShared: knowledge base, customer service, customer supportYC W23VancouverStartup →AIInactiveOpenSightShared: resolve customer, customer support, operationsYC W23San FranciscoStartup →AIcloud humansShared: support ticket, customer support, customer serviceYC W21New York CityStartup →AIInactiveBicycle AIShared: customer support, customer service, operationsYC W17BengaluruStartup →AIAcquiredForethoughtShared: customer supportSPC 2018San FranciscoStartup →
Companies next to Letterbook
Company
ArigladShared: knowledge base, customer service, customer supportYC W23ActiveAI
OpenSightShared: resolve customer, customer support, operationsYC W23InactiveAI
cloud humansShared: support ticket, customer support, customer serviceYC W21ActiveAI
Bicycle AIShared: customer support, customer service, operationsYC W17InactiveAI
ForethoughtShared: customer supportSPC 2018 +1AcquiredAI

Also from S23 in AI

All of S23
AIMindedCursor for AI AgentsYC S23Tel Aviv-YafoStartup →AIAccendAI agents for commercial underwriting at banks and fintechsYC S23Startup →AIAgentCollectB2B debt collection powered by AI agentsYC S23San FranciscoStartup →AIAglideConnect every disconnected app to your SSO.YC S23LondonStartup →AIAirgoodsThe modern distributor for grocers.YC S23New York CityStartup →AIAiSDRAI that finds the right buyers and books sales meetingsYC S23San FranciscoStartup →
Company
MindedCursor for AI Agentsteam of 2ActiveAI, Devtools
AccendAI agents for commercial underwriting at banks and fintechsteam of 182 programsActiveAI
AgentCollectB2B debt collection powered by AI agentsteam of 42ActiveAI
AglideConnect every disconnected app to your SSO.team of 6hiringActiveAI
AirgoodsThe modern distributor for grocers.team of 10hiringActiveAI
AiSDRAI that finds the right buyers and books sales meetingsteam of 34ActiveAI

About Letterbook

Letterbook is the AI-native alternative to Zendesk, Freshdesk, Zohodesk, and Intercom. We help companies manage and resolve customer support tickets across email, in-app feedback, and website forms. Our AI will triage your tickets, write replies, and build your knowledge base.

YC batch
S23 · Summer 2023
Status, per YC
Active
Category
AI
Team size
2
Location
San Francisco, CA, USA
Checked
7h ago

YC tags: Customer Service, Customer Support, AI

Letterbook in S23: 220 companies, 78% AI

Letterbook: questions

Which YC batch was Letterbook in?

Letterbook was in Y Combinator's Summer 2023 batch (S23).

Is Letterbook still active?

Y Combinator lists Letterbook as active.

Where is Letterbook based?

Letterbook lists San Francisco, CA, USA as its location on YC's directory.