Launch HN: AgentMail (YC S25) – An API that gives agents their own email inboxes

The 2FA via email case is great. I recently had to build a browser automation workflow that required 2FA. I ended up using Zapier to monitor email inbox and then extract the code and send back to our API. It was a bit slow.

"Application error: a client-side exception has occurred while loading www.agentmail.to (see the browser console for more information)."

> Looks at developer console...

- "Failed to create WebGL context: WebGL is currently disabled." Dafuq does an email website need WebGL for?

- "Cookie “dmn_chk_xxxxxxxx-yyyy-dead-beef-123456789ABC” has been rejected for invalid domain."

Let me guess...vibe-coded?

hah this is a great idea! sending email is such a common way to communicate and having agents with an inbox makes so much obvious sense. heh just don't let their addresses get out who knows how they'll respond to spam and phishing attempts.

Hey I’m also working on this what a coincidence: https://ai-chat.email

Second time at least HN is launching YC on one of my products:

BrowserBox - hyperbeam

Mailpilot/AI-chat.email - agentnail

amazing now do the same for voice and sms!

In the future all the agent communication will be using agentmail!

Finally agents can spam other agents, instead of humans.

Cool launch. Assuming you guys view email (and therefore SMTP) as becoming the de facto agent communication protocol in the long run. My question — why not something bespoke, similar to OpenAI’s Agentic Commerce Protocol or x402 from Coinbase?

lets goooo

Very interesting. I have a lot of enterprise AI use cases that would really benefit from being email native.

We’re an O365 GCC shop. Appreciate that your enterprise options include Bring Your Own Cloud, that makes things much easier for us.

It would be nice to have integrations with n8n and Glean.

AgentMail looks amazing!

I guess not to be confused with https://github.com/Dicklesworthstone/mcp_agent_mail?

> Agents that source quotes, negotiate prices, and get the best deals.

Didn't Alexa fail miserably with the "have AI buy something for me" theory?

There is a significant mental in allowing someone else make purchase decisions on my behalf:

- With a human, there is accountability.

- With deterministic software, there is reproducibility.

With an agent, you get neither.

FWIW - I am not anti-LLM. I work with them and build them full time.

How does this differentiate from a solution like AWS SES? (Which I assume AI Agents would be quite adept at using to send email)

I understand the differentiator vs GMail, but API-based scripted email access isn’t new.

How do you think this will help with identity verification in the future?

Dead internet theory.

> Email is an optimal interface for long-running agents.

Long-running agents are themselves not optimal though. There are a ton of these coordination layers for long running agents now but they don't make any sense under other paradigms

I'm concerned that this fits in "using today's innovation to solve outdated paradigms".

Google has A2A: An Agent-to-Agent Protocol. SaaS is plumetting in value.

Arbitrary semantics made sense when communications were human-dominated.

If agents dominate these fields, why wouldn't they simply set their own protocols and methods to communicate both text, binary, and agreed data structures?

There's an assumption that email is somehow the best channel, when you've found yourself that the most popular, functional interfaces don't align with your expectations.

Then, ultimately I have a single agent that can sit in numerous communication platforms, such as email

So AgentMail uses Mail Agent

Looks like SES + api access, isn’t Amazon offering that already?

[dead]

It’s a really nice idea actually. There will be some concerns, maybe some mistakes, but it really works as a mean to communicate much easier with an agent

This is super interesting. Interesting to see how I'll be able to use this to help my customers with handling email responses. Gmail sucks for this. Super excited to see what you guys develop this into. Will this be able to eventually expand to other forms of agent communication (i.e. payment or phone numbers)?

The moat for SaaS is gone.

I am 99% certain I could build to parity in a weekend using Cloudflare without the the pricing limitations.

I am thinking it would be within the free tier of CF usage.

I am not certain I have the bandwidth to communicate over delivery and plain text inspection concerns.