Email Validation: Prevent Fake Accounts, Invalid Customers, and Failed Mail Campaigns
Prevent fake accounts and failed campaigns with email validation in your webshop. Save time and money with a clean customer list.
A dirty email list costs you more than you think: failed orders, fake registrations, bounce problems, and ultimately a deteriorating sender reputation. Email validation tackles the problem at the source.
What Exactly Is Email Address Validation?
Email address validation checks three things:
- Syntax — Is the format correct? (
[email protected]) - Domain — Does the domain exist and does it have MX records?
- Mailbox — Can the mailbox receive emails? (SMTP check)
Only step 1 is what most forms check. Steps 2 and 3 are what actually matters.
What Happens Without Email Validation?
| Problem | Consequence |
|---|---|
Typo (@gnail.com) |
Confirmation email never arrives, customer is gone |
| Spam/test accounts | Polluted analytics and marketing lists |
| Fake emails in promotions | Fraud, wasted credits, no real customer |
| High bounce rate | Worse sender reputation with mail providers |
Example API
GET https://api.apicheck.nl/[email protected]&apikey=YOUR_KEY
Response:
{
"valid": true,
"domain_exists": true,
"disposable": false,
"spam_risk": false
}
Available For
- WooCommerce — validation at registration and checkout
- Magento 2 — validation in customer registration
- REST API — for any custom implementation
How It Works for Your Webshop
When an email address is entered in your checkout or registration form, the backend sends the address to the ApiCheck API. If the address is invalid, the customer sees a friendly error message and can correct their address — before the order is placed.
Customers notice nothing of the check. It simply feels like a smart form.
Frequently Asked Questions
What if a customer has a valid address but the check fails?
This can happen with servers that block SMTP checks. In that case the API returns valid: true with reason: unverifiable. You can then choose to accept the address anyway.
Are email addresses stored? No. ApiCheck does not log email addresses. The check is purely technical and GDPR-compliant.
Does it also work for bulk email lists? Yes, you can also use the API to clean up existing email lists through batch processing.