Email is the interface agents already have
Every service speaks email. Give an agent an inbox and it can sign up, verify, receive, and reply — no custom integration per provider.
There's a temptation to build agents a brand-new world of APIs to act through. But the world already has a universal interface that every service supports, that needs no per-provider integration, and that humans use to reach each other: email.
Giving an agent an inbox is the highest-leverage capability you can add, because it unlocks the long tail of things that only happen over email.
Email is the universal fallback
Not every service has an API. Almost every service has email. Sign-up confirmations, verification links, receipts, password resets, replies from real people — these arrive in an inbox, and an agent that can read and write email can handle all of them with one capability instead of dozens of integrations.
It's the difference between teaching an agent a hundred bespoke protocols and teaching it the one everyone already uses.
Receiving is the hard half
Plenty of tools can send email. The capability agents actually lack is receiving and acting on it: reading the verification link, parsing the invoice, replying in-thread, clearing the 2FA code that just landed.
Mailgent treats inbound as first-class. The agent lists threads, reads messages, handles attachments, and replies in place — so it can complete a flow, not just kick it off.
// sign up, then read the confirmation link from the inbox
const msgs = await mail_list_messages({ from: "noreply@service.com", unread: true });
const link = extractVerifyLink(await mail_get_message({ id: msgs[0].id }));
await fetch(link); // the agent confirms its own accountDeliverability is part of the product
An inbox is only useful if its mail lands. Mailgent sends from verified senders with DKIM and SPF configured, so an agent's email reaches the inbox and what it receives is trustworthy — the unglamorous plumbing that decides whether any of this works.
Give your agents a real identity.
An inbox, a vault, a calendar, a DID, and a wallet — one API call away.