Email Validation for Mailjet

Why Validate Emails for Mailjet?

Mailjet enforces strict deliverability standards. Invalid emails increase your bounce rate, trigger their compliance review, and can result in sending limits being imposed. Pre-send validation is essential for maintaining access.

Benefits

• ✓ Stay within Mailjet's sending limits and avoid throttling
• ✓ Maintain high inbox placement rates
• ✓ Reduce compliance reviews and account restrictions
• ✓ Lower transactional email costs by skipping invalid recipients

How to Validate Mailjet Emails

1. Step 1: Integrate email validation into your sending pipeline before Mailjet API calls
2. Step 2: Validate recipient lists before bulk marketing campaigns
3. Step 3: Monitor Mailjet webhook feedback for bounces and update your validation rules
4. Step 4: Periodically re-validate your contact database to catch decayed addresses

API Integration

Integrate email validation directly into your Mailjet workflow:

// Mailjet - Validate before sending
const mailjet = require("node-mailjet").connect(
  process.env.MJ_APIKEY_PUBLIC,
  process.env.MJ_APIKEY_PRIVATE
);

async function sendValidatedEmail(toEmail, subject, text) {
  // Step 1: Validate
  const validation = await fetch("https://api.emailvalidator.com/v1/verify", {
    method: "POST",
    headers: {
      Authorization: `Bearer ${process.env.VALIDATOR_API_KEY}`,
      "Content-Type": "application/json",
    },
    body: JSON.stringify({ email: toEmail }),
  });

  const { deliverable, reason } = await validation.json();

  if (!deliverable) {
    console.log(`Skipping ${toEmail}: ${reason}`);
    return;
  }

  // Step 2: Send via Mailjet
  await mailjet.post("send").request({
    FromEmail: "sender@yourdomain.com",
    FromName: "Your App",
    To: toEmail,
    Subject: subject,
    "Text-Part": text,
  });
}