Email Verification for E-commerce Checkout
Every undeliverable order confirmation email is a customer who thinks their order was lost. Validate at checkout and eliminate the problem.
The hidden cost of unverified checkout emails
The checkout email is the most critical email you send — it confirms the transaction, sets expectations, and anchors the customer relationship. When it bounces, customers panic.
of shoppers expect a confirmation email within 5 minutes of purchase
Industry estimate
Bounced order confirmations generate chargebacks
A customer who doesn't receive an order confirmation email often disputes the charge with their bank. Chargebacks cost you the product, the shipping, and a dispute fee.
Mistyped emails mean lost repeat customers
A customer who misspells their email never receives their receipt, tracking number, or marketing emails. You lose the relationship before it starts.
Fake emails from bots inflate your order count
Bots probing your checkout flow use disposable or random emails. They skew your analytics, waste inventory checks, and pollute your CRM.
Support tickets spike when confirmations fail
"I never got my confirmation email" is one of the most common support tickets in e-commerce. Most of these are caused by a typo the customer made at checkout.
Validate before the order is placed, not after
The right moment to verify an email in an e-commerce flow is during account creation or at the email field — not at payment. Mailbeam integrates early without disrupting the checkout flow.
Validate at account creation, not at payment
Verify when the customer first enters their email — not at the payment step where friction causes cart abandonment.
Suggest corrections for typos
When a customer types 'hotmal.com', show them 'Did you mean hotmail.com?' before they place the order.
Guest checkout compatible
Works for guest checkouts without accounts. Verify the email inline and return immediately.
Webhook for async confirmation
For high-throughput checkout flows, use Mailbeam's webhooks to verify in the background and flag invalid orders for review.
Implementation
Copy-paste ready. Replace the API key and integrate with your existing flow.
import Mailbeam from "@mailbeam/sdk";
const mb = new Mailbeam({ apiKey: process.env.MAILBEAM_KEY! });
// Call this when the customer fills in their email — before payment
export async function validateCheckoutEmail(email: string) {
const result = await mb.verify(email);
if (!result.valid) {
return {
ok: false,
error: "We couldn\'t reach this email. Check for typos.",
suggestion: result.suggestion ?? null,
};
}
if (result.disposable) {
return {
ok: false,
error: "Please use a permanent email address for order confirmation.",
};
}
return { ok: true };
}
// Usage in your checkout API route
export async function POST(req: Request) {
const { email, cart, shipping } = await req.json();
const emailCheck = await validateCheckoutEmail(email);
if (!emailCheck.ok) {
return Response.json({ field: "email", ...emailCheck }, { status: 422 });
}
const order = await createOrder({ email, cart, shipping });
await sendOrderConfirmation(order);
return Response.json({ orderId: order.id });
}Real-world example
Koral Shop (placeholder)
Fashion e-commerce
Challenge
4% of order confirmation emails were bouncing. Customer support was handling 200+ 'where is my order?' tickets per week.
Result
After adding email verification at checkout, confirmation bounce rate dropped to 0.3% and confirmation-related support tickets fell by 85%.
85% fewer 'missing confirmation' tickets
* Example based on anonymized customer data. Results may vary.
Recommended plan
Starter
E-commerce checkouts typically need real-time single verification. The Starter plan covers most stores comfortably, with Growth available when order volume scales.
Frequently asked questions
Ready to get started?
Free tier includes 1,000 verifications/month. No credit card required.