Email for every domain you run.
Signed, sealed, screened.

One email layer for every domain you run

ISET.email turns your domains into a working email platform — sending, receiving, mailboxes, and compliance — without stitching together five vendors. Your developers get a clean API; your people get real addresses; every message carries a verifiable sovereign signature.

Give your users their own email — on your domain

Run an app, a community, a newsletter, or a SaaS? Issue a real name@yourdomain.com mailbox to every user or subscriber — you stay the brand, we run the email. The same engine that powers our own apps, opened up to you by API.

Already powering live products that issue email to their own members. Bring your domain and do the same in minutes.

Let Claude — or any AI agent — govern your email

ISET.email is a live MCP server. Generate one key and any MCP-capable agent can read, search, draft, and send across every mailbox you own — on iset.email or any reseller domain like fidnt.com — while end-to-end-sealed mail stays unreadable to it. One connector, your whole email estate, governed by AI.

https://iset.email/mcp   ·   Authorization: Bearer <your key>

{
  "mcpServers": {
    "iset-email": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://iset.email/mcp", "--header", "Authorization: Bearer YOUR_KEY"]
    }
  }
}

Four pillars, one platform

Each address on each domain inherits the full stack automatically.

From domain to live email in four steps

// one SDK, every domain
import { ISETEmail } from '@iset/email';
const email = new ISETEmail({ apiKey });

await email.send({
  from: 'compliance@fiduciary.technology',
  to:   'user@example.com',
  subject: 'Your signed receipt',
  html: '<p>Post-quantum signed · screened</p>',
});

// screen anything — even mail from
// another platform you connect
await email.scan({ from, subject, html });

Choose how mail reaches the inbox

The sovereign layer is the same; you choose the delivery backend that fits where you are today.

Real cryptography, from day one