Email your app can actually trust.

Copy# Send your first email in 30 seconds
curl https://app.getrainmail.com/api/send \
  -H "Authorization: Bearer rk_live_YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "from": "you@yourcompany.com",
    "to":   "customer@example.com",
    "subject": "Welcome aboard",
    "html": "<p>Thanks for signing up.</p>"
  }'

Why build on Rainmail

Quickstart

Install the SDK, create a key in your dashboard (Developers tab), then send.

Copy# Install — works today (clean "npm install rainmail" registry name coming)
npm install https://app.getrainmail.com/sdk/rainmail-node.tgz
pip install https://app.getrainmail.com/sdk/rainmail-python.tar.gz

Copy// Node
const res = await fetch("https://app.getrainmail.com/api/send", {
  method: "POST",
  headers: { Authorization: `Bearer ${process.env.RAINMAIL_KEY}`, "Content-Type": "application/json" },
  body: JSON.stringify({ from, to, subject: "Welcome", html: "<p>Hi</p>" }),
});

Copy# Python
import requests
requests.post("https://app.getrainmail.com/api/send",
  headers={"Authorization": f"Bearer {KEY}"},
  json={"from": sender, "to": to, "subject": "Welcome", "html": "<p>Hi</p>"})

API Reference

Base URL https://app.getrainmail.com · Auth: Authorization: Bearer rk_live_…

Copy// Rainmail POSTs this to your webhook URL on every inbound email
{
  "event": "inbound",
  "data": {
    "to":      "app@yourdomain.com",
    "from":    "sender@example.com",
    "subject": "Hello",
    "text":    "the message body",
    "html":    "<p>the message body</p>",
    "message_id": "<...>"
  }
}

Copyconst s = await fetch("https://app.getrainmail.com/api/inboxing/score", {
  method:"POST", headers:{ "Content-Type":"application/json" },
  body: JSON.stringify({ subject, html })
}).then(r => r.json());
// => { verdict: "green", score: 96, checks: [...] }

How Rainmail compares

Honest, not hype — the same job, combined in one place, at a lower price, with things they simply don’t offer.

Where they lead today: brand maturity, polished official SDKs, and proven hyperscale. We’re closing that gap — SDKs and a published free tier are next.

Coming next

Built on the live API above — shipping in this order.