Email infrastructure built specifically for AI agents.
Comparing AgentMail? MailKite gives agents an inbox over a hosted MCP server (no keys) plus unlimited free domains and a full send+receive platform.
See the full MailKite vs AgentMail comparisonA minimal, copy-paste starter. Swap in your own domain and API key.
import { verifyWebhook } from "@mailkite/client";
// MailKite POSTs every inbound email at your domain as JSON.
// Point a route at this handler in the MailKite dashboard.
export default async function handler(req: Request) {
const raw = await req.text();
const sig = req.headers.get("x-mailkite-signature") ?? "";
// Reject anything not signed by your webhook secret
const ok = await verifyWebhook(sig, raw, process.env.MK_WEBHOOK_SECRET!);
if (!ok) return new Response("bad signature", { status: 401 });
const email = JSON.parse(raw);
// Route into AgentMail: open a ticket, create a task, store a record
await routeIntoName(email); // email.from · email.subject · email.text
return new Response(JSON.stringify({ ok: true }));
} AgentMail is a funded email platform built specifically for AI agents, offering inboxes that agents can read and send from programmatically. It's an early mover in the agent-email category and a direct point of comparison for teams giving agents their own mail.
Usage-based
Agent & MCP email
Inboxes, SDKs, and MCP servers that give AI agents email.
Both give agents mail. MailKite's angle is a hosted remote MCP server (OAuth, no keys), inbound-first JSON webhooks, and unlimited free domains on a full platform. See /alternatives/agentmail.
Hosted OAuth MCP — agents get their own inbox, no local install.
View details
Wraps existing mailboxes (Gmail/Outlook) under one API — not its own mail.
View detailsReads/sends from existing Gmail accounts; requires OAuth scope per user.
View detailsReceive email as a webhook, send with one API. Unlimited free domains.
View detailsPoint a domain, drop in a webhook URL, and send your first email in minutes. Unlimited domains, no credit card.