Stealth mode

Email infrastructure
for the AI era

A REST API built from scratch for developers who ship fast. Send transactional emails, process inbound, and let AI agents handle the rest. No legacy baggage. No surprises on your bill.

send.js
// Three lines. That's it.
const res = await fetch('https://restapi.email/v1/send', {
  method: 'POST',
  headers: { 'Authorization': `Bearer ${API_KEY}` },
  body: JSON.stringify({
    from: 'team@yourapp.com',
    to: 'user@example.com',
    subject: 'Welcome aboard',
    html: '<h1>You're in.</h1>'
  })
});

// Response: 200 OK
{ "id": "msg_8f2k...", "status": "delivered" }
Why this exists

The big players got
comfortable

SendGrid ships confusing docs. Mailgun doubled their prices. Amazon SES requires a PhD in AWS. Developers deserve an email API that respects their time.

⚡

Sub-second delivery

Emails hit inboxes before your user closes the browser tab. Built on modern infrastructure, not 2010-era queues.

⇄

Send + receive, unified

Inbound email processing is a first-class citizen, not a webhook bolted on as an afterthought.

⚙

AI-native from day one

MCP server support, smart routing, content optimization. Built for the era where your AI agent sends more emails than you do.

$

Transparent pricing

Pay for what you send. No surprise fees, no enterprise-only features, no calling sales to get a quote.

How we compare

Honest benchmarks

We're not going to pretend everything is perfect yet. But here's where we're already ahead, and where we're catching up.

restapi.email
Others
Modern REST + Bearer auth
✓
Mixed (some use Basic Auth)
Native inbound processing
✓
Webhook-based
AI agent support (MCP)
✓
Not yet
Setup to first email
< 2 min
15-60 min
Price hike risk
Indie-owned
PE/Corp owned

Email is infrastructure.
It should feel like it.

Built by a Shopify-alumni engineer with 14 years in backend systems. No VC pressure to squeeze margins. Just a clean API that does exactly what you need.