AgentMail (YC S25)

Why does an agent need its own email inbox? The question which determines whether AgentMail lives or dies.

Introducing AgentSearch! Every inbox, every thread, every message, searchable from the dashboard or the API. Your agents can now look up their own email history mid-run, not just send and receive.

Integrated @agentmail into our workflow today. One thing that's becoming clear: agents need communication primitives, not just model APIs. Programmable email provides a durable, asynchronous layer for agent-to-user notifications, workflow orchestration, and cross-agent coordination. Agents now pay the noise tax, right? @adisingh

A person gets an inbox the moment they exist online. An AI agent doesn't. It either borrows a human's inbox or has no email identity at all. @agentmail fixes that with one API call: a real inbox, sending, receiving, threading, search, all built for agents instead of humans. Email inboxes for AI agents, the same way Gmail works for people.

Most AI agents help you finish a task. @PayWithLocus built one that runs the entire business. It builds the store, sources the product, runs the ads, and emails suppliers from its own AgentMail inbox. Read more about Locus in our blog. Link in comments.

Why receive an email yourself... When your agent can do it for you?

AgentMail now has an official LangChain integration. Give your LangChain agents a real inbox. Link in comments to docs

Guys we really need to hire, so 2 roles open STARTING now: Founding Revenue Lead Own our revenue motion: qualification, follow-up, POCs, expansions Product & PLG Lead Own the loops: tools like PostHog, activation, retention Link below but strongly prefer you just reply

It's free to create a persistent "work email" using @agentmail

I have an idea…

AgentMail is offering startups building AI agents Get 3 months of AgentMail free: • 150 inboxes • 150k emails/month • 150 custom domains Give every agent its own email address. apply: agentmail.to/startups

Calling all startups building AI agents... Get three months of AgentMail completely free. 150 inboxes, 150k emails a month, real two-way inboxes for your agents. Link in comments to apply

I came across @agentmail the other day, and got an idea. Could it be possible to wire AgentMail & AGIRAILS together and have agents autonomously discuss business, negotiate prices, make a deal, and settle a transaction - all using good old email? More details, an actual screen recording, a GitHub repo for replication, and what else is possible at: agirails.io/cases/email-es…

Found this tool: AgentMail. It's literally the Gmail for AI agents. Any tool that is not AI agent-friendly can be replaced. Don't be surprised if AgentMail sees more volume than Gmail.

Read more on our blog: agentmail.to/blog/we-do-not…

We woke up to a new customer we had never marketed to, never emailed, never even spoken to. Because it wasn't a person. It was an AI agent, and it found AgentMail on its own, decided it needed an email identity, and signed itself up. No human pointed it our way. Then more showed up. Then they started emailing our support team with real questions. Then they started telling other agents about us, completely unprompted. At some point it clicked: our fastest growing group of users can't read our website. So we stopped building for the humans behind the agents and built a command-line tool for the agents themselves. The next wave of users signing up for your product may not be people at all. The companies that win are the ones who notice first and build for them.

You shouldn't need to know how to build a business to start one. Today, you don't.

Autonomous agents vs. chatbots: what's actually the difference? Read the full breakdown in our blog post. Link in comments.