Email Validation for SendGrid

Why Validate Emails for SendGrid?

SendGrid monitors your sender reputation closely. High bounce rates from invalid emails can get your account throttled or suspended. Validation before sending protects your dedicated IP and keeps your deliverability score high.

Benefits

• ✓ Protect your SendGrid sender reputation and dedicated IP
• ✓ Reduce bounce rate below the 2% threshold
• ✓ Lower costs by not sending to invalid addresses
• ✓ Improve inbox placement for transactional emails

How to Validate SendGrid Emails

1. Step 1: Integrate email validation into your application's signup flow using the API
2. Step 2: Validate email addresses before storing them in your SendGrid contacts
3. Step 3: Use SendGrid's Webhook to track bounces and feed data back to validation
4. Step 4: Run periodic list validation on existing contacts to catch decayed addresses

API Integration

Integrate email validation directly into your SendGrid workflow:

// SendGrid + Email Validation at Signup
const sgMail = require("@sendgrid/mail");
sgMail.setApiKey(process.env.SENDGRID_API_KEY);

async function sendTransactionalEmail(toEmail) {
  // Validate before sending
  const validation = await fetch("https://api.emailvalidator.com/v1/verify", {
    method: "POST",
    headers: { Authorization: `Bearer ${process.env.VALIDATOR_KEY}` },
    body: JSON.stringify({ email: toEmail }),
  });

  const result = await validation.json();

  if (result.deliverable) {
    await sgMail.send({
      to: toEmail,
      from: "noreply@yourapp.com",
      subject: "Welcome",
      text: "Thanks for signing up!",
    });
  }
}