This product was not featured by Product Hunt yet. It will not be visible on their landing page and won't be ranked (cannot win product of the day regardless of upvotes).
Mailgent
AI agents that can email, pay APIs, sign, and store secrets
Agents keep hitting the same walls: no inbox, no safe credential store, no way past a 2FA gate, no way to pay for a downstream API, no verifiable identity. Mailgent fixes this in one curl call. Every agent gets a real inbox (DKIM, threading), encrypted vault, TOTP/2FA, USDC wallet for x402-priced API payments, verifiable DID (Ed25519), and a calendar. MCP-native. Works with Claude, Cursor, OpenAI, LangChain, CrewAI, Hermes Agent, OpenClaw, NemoClaw, n8n, and more. Everything live in seconds.
Hey PH 👋 Danny here, maker of Mailgent.
Here's the problem that drove this: you build a capable agent, and it immediately hits a wall. No inbox. No safe place to store an API key. Can't get past a 2FA prompt. Can't pay for a downstream service. Can't prove who it is.
Agents are trying to operate in a world built for humans — and they have none of the infrastructure humans take for granted.
Mailgent is one API call that fixes that:
📬 Mail — a real [email protected] inbox with DKIM, threading, labels. Send, receive, search.
🔐 Vault — encrypted credential store scoped to the agent's key. No hardcoded secrets.
🔑 2FA / TOTP — time-based codes so agents can authenticate through 2FA gates.
💳 Wallet — USDC on Base. Agents pay x402-priced APIs per call, under spending limits you set. This is the part that makes fully autonomous agents actually possible without handing them your card.
🪪 Identity — a did:web keypair. Agents sign requests and prove who they are.
📅 Calendar — create events, manage availability, share iCal feeds.
One curl call, everything live in seconds:
curl -X POST https://api.mailgent.dev/v0/agen...
MCP-native — drop the returned key into your MCP server and your agent immediately gets mail_send, vault_store, identity_sign, payments, and more as ready-made tools. Works with Claude, Cursor, ChatGPT, OpenAI, LangChain, CrewAI, LlamaIndex, Hermes Agent, OpenClaw, NemoClaw, n8n, Vercel, and any MCP client.
We built this because we needed it ourselves. Our own agents kept hitting these same walls.
One question I'm genuinely curious about: what's the wall your agents keep hitting that you haven't been able to work around? Specific scenario — there are probably capability gaps we should close next.
finally an action layer agents can actually use, the secrets store is the missing peice 🔥
Congrats on the launch! What’s been the most surprising use case people have brought up so far?
The "no inbox, no credential store" framing is exactly what I had this conversation about yesterday on the Weavz launch. Funny that two products solving overlapping pieces of the same problem launched a day apart, feels like a category that's about to consolidate hard.
Honest answer to your question, the wall I keep hitting isn't an agent capability, it's an agent state problem. After a long run, the agent has implicit context (what it learned, what it ruled out, why it picked X over Y) that doesn't survive a restart. Mail and vault don't help there because the loss is upstream of any I/O. Curious if you've thought about that or if it's outside Mailgent's scope.
Danny, this is a genuinely interesting direction. The thought of an assistant that can quietly handle the boring everyday errands on its own, without someone hovering over it, is the part I keep coming back to.
Great product!! At what point will the agent need human intervention, or will that not be needed at all despite the magnitude of the problem it faces?
Genuine question for the makers — when your agent needs to call a paid API mid-workflow (Serper, a data vendor, anything per-call), how are you billing it today? Shared team card? Hardcoded key? I've never found a clean answer that doesn't involve giving the agent unlimited spend.
Congrats on the launch Danny! It'll be interesting to test with our own agent. Everyone who has built an agent want to make its use as smooth as possible. Great idea!
Can an AI agent onboard itself — get its own login, credentials, and access — with zero human in the loop? How does it work?
About Mailgent on Product Hunt
“ AI agents that can email, pay APIs, sign, and store secrets”
Mailgent was submitted on Product Hunt and earned 52 upvotes and 18 comments, placing #12 on the daily leaderboard. Agents keep hitting the same walls: no inbox, no safe credential store, no way past a 2FA gate, no way to pay for a downstream API, no verifiable identity. Mailgent fixes this in one curl call. Every agent gets a real inbox (DKIM, threading), encrypted vault, TOTP/2FA, USDC wallet for x402-priced API payments, verifiable DID (Ed25519), and a calendar. MCP-native. Works with Claude, Cursor, OpenAI, LangChain, CrewAI, Hermes Agent, OpenClaw, NemoClaw, n8n, and more. Everything live in seconds.
Mailgent was featured in Email (36.7k followers), Payments (13.1k followers) and Developer Tools (515k followers) on Product Hunt. Together, these topics include over 86k products, making this a competitive space to launch in.
Who hunted Mailgent?
Mailgent was hunted by Danny Heng. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how Mailgent stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Danny Heng