Run real email on any domain you own. Get a full mailbox app plus a clean sending API, encrypted storage, passkey sign-in, and fraud screening on every message. You can also give your own users addresses on your domain.
ISET.email handles sending, receiving, mailboxes, and compliance for your domains, so you don't have to wire up several vendors. Developers get a clean API. Your people get real addresses. Every message carries a signature anyone can verify.
A clean transactional API your developers drop in. DKIM-signed, with a verifiable signature on every message.
Real addresses on any domain — compliance@yourbrand.com — delivered to sealed mailboxes.
Passkey login, account safeguards, and a fraud engine that screens phishing, spoofing and scams.
Sign in and you get a complete mail app in the browser — and one you can install on your phone or desktop. Everything below is live today.
Threads, search, stars, folders, drafts, signatures, schedule-send, snooze, undo-send, filters, aliases, and an out-of-office reply.
Ask questions, summarize a message, draft a reply, or write a new email from a one-line prompt. It runs on our own model — no third party reads your mail.
A calendar with sounding reminders, a task list, tabbed notes, and contacts — all in one place, synced across your devices.
Import from Gmail, Outlook, or any IMAP account in a few clicks. Add two-step verification and turn on end-to-end encryption when you want it.
Run an app, a community, a newsletter, or a SaaS? Give every user or subscriber a real name@yourdomain.com mailbox. You stay the brand; we run the email underneath. It's the same engine we use for our own apps, available to you by API.
One click: we mint your API key, generate your DKIM keys, and hand you the exact DNS records (MX · SPF · DKIM · DMARC). Verify and you’re live.
One API call creates user@yourdomain.com for each of your members — sealed, per-user, non-custodial. You can create; you can never read their mail.
Embed a white-label mailbox your users reach with one-tap SSO — no second login, no “powered by” — plus search-and-message and encrypted calling between your members.
Already powering live products that issue email to their own members. Bring your domain and do the same in minutes.
ISET.email is a live MCP server. Generate one key and an MCP-capable agent can read, search, draft, and send across every mailbox you own, on iset.email or a reseller domain like fidnt.com. Mail you've end-to-end encrypted stays unreadable to it. One connector covers all your addresses, and you can revoke it any time.
In Settings → Connect AI agents, create a scoped key (read-only or full). It covers every address you own, across providers.
Paste the endpoint + key into Claude Desktop or any agent. Tools: list · search · read · ask-inbox · draft · send.
Scoped to you and revocable any time. Encrypted mail is never exposed. Nothing leaves your stack.
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"]
}
}
}
Each address on each domain inherits the full stack automatically.
A familiar, drop-in send endpoint, domain onboarding with SPF·DKIM·DMARC, webhooks, and a TypeScript SDK.
Mailboxes sealed at rest with post-quantum encryption. The server stores ciphertext, not your mail.
Phishing-resistant passkeys, purpose-bound consent, kill-switch & money-lock, court-admissible audit.
Every message screened for phishing, spoofing, scams and anomalies — blocked on send, quarantined on receipt.
Add your domain and publish the DNS records we generate — shown as ready-to-paste fields.
Mint any address — role@yourdomain.com — no per-address setup.
Call POST /v1/emails to send; inbound mail lands sealed in the mailbox.
Signed with a post-quantum signature and screened for fraud — verifiable by anyone.
// 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 });
The sovereign layer is the same; you choose the delivery backend that fits where you are today.
| Mode | Sends to anyone | Inbound | Live today | Best for |
|---|---|---|---|---|
| Cloudflare routing + Send-as | verified / your inbox | ✓ forward | ✓ | Domains with working email, free |
| Provider relay | ✓ any recipient | ✓ sealed | ✓ | Transactional API, real deliverability |
| Own sovereign MTA | ✓ any recipient | ✓ sealed | after IP warm-up | Full sovereignty |
A post-quantum signature on every message and every state change — verifiable independently of us.
Mailboxes sealed to the holder's key. Offline-first option means the server keeps no secret at all.
Hash-chained, re-verified on read — evidence an action was consented and logged.
Connect a domain, provision your first address, and send a signed message in minutes.