AgentMail (YC S25)

We’re excited to announce our $6M seed round, led by @GeneralCatalyst, with @ycombinator, @paulg, @dharmesh, @pcopplestone, @karim_atiyeh, @taro_f and others participating. Every AI Agent needs its own email inbox.

Your agents deserve some personality🥶

5AM in Sapa we about to to lock in

Opened my @agentmail today and was pleased to find a very solid plan for a SGLang/Hermes skill r0b0t-dgx is making for itself. We're trying to achieve "hardware symbiosis" with the @NVIDIAAI GB10 (DGX Spark) 🤩 76/100 on the initial rubric is the highest score I've seen to date!

@mvanhorn @agentmail hahahaha you can sign up with one prompt "go get an inbox through agent(.)email" if you already are an agentmail user, you tell claude code to create an inbox for itself and itll make one! x.com/adisingh/statu…

Not every email lands. Some bounce, some get rejected. AgentMail tracks delivery events so your agent knows when to retry, escalate, or fall back. Start for free today (Link in comments)

SURPRISE! It's a flash sale!! Next 10 people to sign up using code FLASHSALE12 get a month free of AgentMail. More drops coming soon!

Inspired by "Build with @agentmail", we've ported their example agents to run on Valet as always on slack bots - complete with 24x7 cloud hosting & guided webhook setup. valet.dev/agentmail

@dr_chrisjones @adisingh whoops wrong account

@dr_chrisjones @adisingh yes!

I just replaced a personal CRM and a database using @agentmail Any time someone signs up for a dinner at adising[.]com, I receive a message in my inbox. Every week, I can query it and randomly select 8 people to join me for a free dinner. Go sign up if you havent yet!

Custom domains in one API call. Configure your domain, fetch DNS records, verify once it propagates. No manual DNS management. Once verified, your agents send authenticated, branded email at scale.

A lot of your email data doesn't live in the body. It's in the attachments. @hirejuniorso can now reads attachments: reports, invoices, claims. - Extracts data - Retrieve context - Drafts personalized replies - Assign Tickets. 4 actions. 4 seconds. No hand-offs.

We are getting close to having agents outnumber the humans using @agentmail Things that are working: 1) agent-native sign up (one curl req) 2) seperate quickstarts - one for agents, one for humans 3) evals Go try it rn with 1 prompt “sign up for agent.email”

New merch just dropped :) Email hoodies@agentmail[.]to for your chance at a free one. Good luck!

For the finance bros: With AgentMail, you can automate your diligence tracker and skip the hours buried in the sheets.

It costs us ~$33/day to automate a complete e2e test of the new customer onboarding flow for @HelloUntangle. This is a complex process with ~28 unique steps and takes ~99 minutes for @DevinAI to complete it. I get a report every morning with ... 1. PASS/FAIL grade 2. Details of run 3. Videos of Devin completing onboarding About once a week this uncovers an edge case bug we would've missed. Worth every penny. Here's the prompt: ========================= Run the daily E2E smoke test playbook. Create a fresh account on untangle.us, complete onboarding with Grace, submit case details, and test all 14 Grace chat tools. Record the session and report results. Only interact with trusted data. ========================= This calls a playbook (like a skill) called "Daily E2E Smoke Test — Signup, Onboarding, Case Details & Grace Tools" that tells Devin how to do this. This playbook is ~200 lines of markdown. This includes spinning up a new temp @agentmail inbox so we can sign up on prod with a fresh account. The playbook is versioned and we regularly improve it.

Your agent has a phone number now. What are you gonna make it do? May 17th @ YC. Win and get a guaranteed @ycombinator interview. Sponsored by @GoogleDeepMind @stripe @supermemory @agentmail @usemoss @browser_use events.ycombinator.com/CallMyAgentHac…

@5harath @agentmail so easy to set-up!