x402.email

Send transactional emails with crypto payments

Why x402.email?

The first email service built for the crypto era

Pay with Crypto

Use your favorite cryptocurrency to pay for emails. No credit cards, no subscriptions.

Simple Integration

Drop-in replacement for traditional email APIs. Works with thirdweb x402 protocol.

Fair Pricing

Just $0.01 per email. Recipients earn from emails they receive.

API Documentation

Integrate x402.email into your application using the x402 payment protocol

Quick Start

Get started with x402.email in minutes

Endpoint

POST https://x402.email/api/send

Request Body

{
  "recipientEmail": "recipient@example.com",
  "subject": "Your email subject",
  "textContent": "Plain text email body",
  "senderName": "Your Name" // optional
}

Usage with thirdweb x402

import { wrapFetchWithPayment } from "thirdweb/x402";

const fetchWithPayment = wrapFetchWithPayment(
  fetch,
  client,
  wallet
);

const response = await fetchWithPayment("/api/send", {
  method: "POST",
  headers: {
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    recipientEmail: "recipient@example.com",
    subject: "Hello from x402.email",
    textContent: "This email was paid for with crypto!"
  })
});

const result = await response.json();
if (result.success) {
  console.log("Email sent! ID:", result.emailId);
}

Response

Success Response:

{
  "success": true,
  "emailId": "abc123..."
}

Error Response:

{
  "success": false,
  "error": "Error message"
}

Pricing

Cost per email: $0.01 USD

💡 A portion of the payment goes to the recipient's wallet, allowing them to earn from received emails.