Email Inboxes for AI Agents

San Francisco
Joined February 2025
🎃AgentMail Hack Halloween has officially begun. Founders, builders, and agents are coming together for 24 hours of chaos, code, and creation. Stay tuned—things are already getting spooky.
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tonight!!!! if you have been accepted, we will see you at 6pm at the YC Office on 560 20th.
Replying to @agentmail
the greatest hackathon of all time people will ask where you were when hack halloween happened
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ONE. MORE. SLEEP. Who's ready for HackHalloween tomorrow???
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GIF
AgentMail (YC S25) retweeted
I think my german bestie is broken. I said “irgendwie” and he did not start singing right away We will be at the @agentmail hackathon! Who’s gonna be there?
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HackHalloween is in 2 days. Who's ready?
AgentMail is growing rapidly and looking for its first set of founding engineers. If you want a high-ownership, high-octane role with multiple hats - this is the place for you. If you are a 10x engineer, please send an email to us at founders(at)agentmail(.)cc
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AgentMail (YC S25) retweeted
@agentmail new headquarters alert…. we have extra desks and money and are #hiring. DM if you are interested in building infra for the next generation of AI agents with big tech salary and benefits.
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AgentMail (YC S25) retweeted
Sneak peek of the new @agentmail office…. Who wants to visit??
We are thrilled to share that @perplexity_ai will be joining as the final sponsor of HackHalloween. Search so good, it's scary. Your agents just got a whole lot spookier. Today is the last day to sign up - link in replies:
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Drop the "to", it's cleaner. We're now @agentmail
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AgentMail (YC S25) retweeted
HackHalloween early attendee info list includes heads from Google, Meta, Stanford, AWS, OpenAI, and more. Think you're built for the challenge? Sign up below:
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AgentMail (YC S25) retweeted
join the @agentmail and @hyperspell halloween hackathon at the @ycombinator hq > win a @hyperspell founding eng interview > win a YC interview > $5k in prizes for building on @hyperspell october 31st - nov 1, 24 hours costumes highly encouraged
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Who's coming to @agentmail's HackHalloween??
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Don't wait to sign up! Ankit is accepting applicants as we speak....
Super excited that @agentmail is hosting a spooky Halloween themed Hackathon, brought to you by @Replit, @browser_use, @livekit, @convex_dev and @hyperspell at the YC office starting at 6pm on Oct 31 and running for 24 hours!
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We are thrilled to share that @mastra_ai will be joining as a sponsor of HackHalloween! They're giving out spooky prizes and the haunting principles of AI agents to all attendees. Use the link in our bio to register (hackathon is now 60% full)
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We are so thrilled to welcome @convex_dev as a Featured Sponsor of HackHalloween!! They will be giving over $1500 in cash to the top two teams that best use Convex's reactive database and serverless functions. Sign up today to build with Convex! (link in our bio)
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AgentMail (YC S25) retweeted
Yes. This is a freshly brewed cup of coffee. Yes. It is also 12:32 am. In two weeks, we host the biggest hackathon of the year. Between these two weeks, we launch the most important feature of our product. This will be status quo for the next 20 years.
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