Deliver emails that always arrive.

# Send via REST API
curl https://api.nexusmail.com/v1/send \
  -H "Authorization: Bearer $NEXUSMAIL_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "from": "billing@acme.com",
    "to": ["user@example.com"],
    "subject": "Your receipt",
    "text": "Thanks for your order!",
    "html": "Thanks for your order!",
    "tags": ["receipt","v1"]
  }'

// Node.js (ESM)
import fetch from "node-fetch";
const res = await fetch("https://api.nexusmail.com/v1/send", {
  method: "POST",
  headers: {
    "Authorization": `Bearer ${process.env.NEXUSMAIL_API_KEY}`,
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    from: "billing@acme.com",
    to: ["user@example.com"],
    subject: "Your receipt",
    html: "Thanks for your order!",
    metadata: { orderId: "ord_123" }
  })
});
.log(await res.json());

# Python (requests)
import os, requests
r = requests.post(
  "https://api.nexusmail.com/v1/send",
  headers={"Authorization": f"Bearer {os.environ['NEXUSMAIL_API_KEY']}"},
  json={
    "from": "billing@acme.com",
    "to": ["user@example.com"],
    "subject": "Your receipt",
    "text": "Thanks for your order!"
  }
)
print(r.json())

# SMTP (NodeMailer)
import nodemailer from "nodemailer";
const transporter = nodemailer.createTransport({
  host: "smtp.nexusmail.com",
  port: 587,
  secure: false,
  auth: { user: "apikey", pass: process.env.NEXUSMAIL_API_KEY }
});
await transporter.sendMail({
  from: "billing@acme.com",
  to: "user@example.com",
  subject: "Your receipt",
  html: "Thanks for your order!"
});