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AgentMail

YC S25

San Francisco, US · Founded 2025 · 10 employees · Hiring · 10 known investors

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AgentMail provides an email inbox API that enables AI agents to create and manage their own email accounts. The platform serves developers building AI agents that need email communication capabilities.

AI & Machine LearningData & InfrastructureDeveloper ToolsEnterprise SoftwareSaaSAPIEmailUnited States of AmericaAmerica / Canada

Founders & leadership· Y Combinator alumni (S25)

AgentMail was founded in 2025 by Haakam Aujla, Michael Kim, and Adi Singh.

HAHaakam Aujla
Haakam AujlaCo-FounderHaakam Aujla previously worked as a quantitative researcher at Optiver and is now founder of AgentMail.
MKMichael Kim
Michael KimCTOMichael Kim previously worked at NVIDIA in the autonomous vehicles division and is now founder of AgentMail.
ASAdi Singh
Adi SinghFounderHe previously held investment roles at Accel, StepStone Group, and Flex Capital, and has operational experience in accounting, edtech, and e-commerce.

Investors · 10

Pioneerlisted by PioneerToronto, Ontario

How we know: Y Combinator's founder network · pioneerfund.vc · Not right? Tell us

Y Combinatorlisted by Y CombinatorSan Francisco · $500K

How we know: the Y Combinator directory · funding news · finance.yahoo.com · open dataset · 5k.vc investor directory · Not right? Tell us

Blast.Clubreported$5.5M

How we know: Y Combinator's founder network · Not right? Tell us

Dharmesh Shahreported

How we know: press coverage · Not right? Tell us

Kleiner PerkinsreportedMenlo Park · $500K – $15M

How we know: Y Combinator's founder network · Not right? Tell us

Phosphor Capitalreported

How we know: finance.yahoo.com · Y Combinator's founder network · Not right? Tell us

Rice CapitalreportedCovina

How we know: Y Combinator's founder network · Not right? Tell us

Ritual CapitalreportedMenlo Park · $100K – $500K

How we know: Y Combinator's founder network · Not right? Tell us

Sequoia CapitalreportedMenlo Park · $100K – $50M

How we know: Y Combinator's founder network · Not right? Tell us

Funding

SEC filings, press & company announcements

Source: company announcements and press reports — follow each round's link for the claim.

Images

AgentMail photoAgentMail photo

Founder mafia

2 people who came through AgentMail went on to found or lead other companies.

Adi SinghFounderFounded Ara +1Michael KimCTOFounded Nexo

Related companies · 10

ZapierZapier provides a platform for connecting AI models and agents to workflows and business applications, enabling teams to automate tasks across over 9,000 apps without coding. The platform serves enterprises, operations teams, and businesses of all sizes looking to deploy AI-driven automation for lead capture, customer support, employee onboarding, and other business processes.
MailTimeMailTime reformats email threads into chat-style conversations and separates personal communications from marketing messages and newsletters.
Mailgun ,Mailgun provides an API platform and infrastructure for developers to send, track, and manage transactional and marketing email at scale. The service is designed for software companies and development teams to integrate email capabilities and improve deliverability across global operations.
Compose.aiCompose.ai offers a Chrome extension that uses artificial intelligence to autocomplete text across web applications, functioning similarly to email autocompletion tools but with broader applicability.
ResendResend provides an email sending platform for developers to build and send modern email templates that reach the inbox reliably. The platform addresses the technical challenges of email delivery across different email clients.
PosterousPosterous provides a blogging platform that lets users publish content by sending emails, and offers privacy-controlled sharing features across multiple platforms.
TwilioTwilio provides a cloud-based communications platform that enables businesses to integrate voice, messaging, and video into applications using APIs. The platform combines communication channels, contextual data, and AI orchestration for enterprises and developers building customer experiences.
LoopsLoops builds an email platform designed for software companies to manage customer communication and engagement.
SuperhumanSuperhuman provides an AI-native platform for marketing teams that integrates AI agents, email management, and collaborative documentation within existing workflows. The platform connects marketing tools and data sources to reduce context-switching and streamline campaign execution from draft to launch.
ZaymoZaymo provides interactive email blocks that enable customers to complete transactions, write reviews, and manage subscriptions directly within emails without leaving the email client. The platform offers no-code integration with existing email templates and marketing stacks, serving email marketers and brand marketing teams.

Companies working in the same space as AgentMail.

Legal entities · 1

corporate structure
AgentMail, Inc.

In the news

AgentMail Raises $6M Seedthesaasnews.com · Sep 2026AgentMail Raises $6M led by General Catalyst to Build the First Email Provider for AI Agentsfinance.yahoo.com · Mar 2026We've raised $6M to build the first email inboxes for AI agents. | AgentMailagentmail.to · Mar 2026AgentMail raises $6M to build an email service for AI agents | TechCrunchtechcrunch.com · Mar 2026AgentMail raises $6M to build an email service for AI agents | TechCrunchtechcrunch.com · Mar 2026AgentMail - The API-first email provider for AI agentsycombinator.com · Jul 2025

Frequently asked questions

What does AgentMail do?
AgentMail provides an email inbox API that enables AI agents to create and manage their own email accounts. The platform serves developers building AI agents that need email communication capabilities.
Who founded AgentMail?
AgentMail was founded by Haakam Aujla, Michael Kim, Adi Singh in 2025.
Who are AgentMail's investors?
AgentMail's investors include General Catalyst, Pioneer, Y Combinator, Blast.Club, Dharmesh Shah, Kleiner Perkins, Phosphor Capital, Rice Capital and 2 more.
Where is AgentMail headquartered?
AgentMail is headquartered in San Francisco, US.