Powerful Email API - Free for Developers

REST API - Send Emails in Any Language

const response = await fetch('https://risumail.risu.in/v1/mail/send', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    from: 'you@yourdomain.com',
    to: 'recipient@example.com',
    subject: 'Hello from Risu Mail!',
    html: '<p>This email was sent via Risu Mail API.</p>'
  })
});

import requests

response = requests.post(
  'https://risumail.risu.in/v1/mail/send',
  headers={'Authorization': 'Bearer YOUR_API_KEY'},
  json={
    'from': 'you@yourdomain.com',
    'to': 'recipient@example.com',
    'subject': 'Hello from Risu Mail!',
    'html': '<p>Sent via Risu Mail Python API.</p>'
  }
)

<?php
$payload = [
  'from' => 'you@yourdomain.com',
  'to' => 'recipient@example.com',
  'subject' => 'Hello from Risu Mail!',
  'html' => '<p>Sent via Risu Mail PHP API.</p>',
];

$ch = curl_init('https://risumail.risu.in/v1/mail/send');
curl_setopt($ch, CURLOPT_HTTPHEADER, [
  'Authorization: Bearer YOUR_API_KEY',
  'Content-Type: application/json',
]);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($payload));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
curl_close($ch);

curl --request POST 'https://risumail.risu.in/v1/mail/send' \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
    "from": "you@yourdomain.com",
    "to": "recipient@example.com",
    "subject": "Hello from Risu Mail!",
    "html": "<p>Sent via cURL API call.</p>"
  }'

SMTP Relay - Plug Into Any App

Keep your existing SMTP libraries and credentials format. Use SMTP for quick compatibility and migrate to REST gradually when you need advanced tracking.

API Key Features

API Limits - Free vs Pro

Compare: Risu Mail API vs SendGrid API

Risu Mail keeps API onboarding simple, supports SMTP and REST from day one, and gives strong value for student teams and startup budgets.