A correct email address is worth a thousand dollars, some ecommerce expert would say 🙂 So, you don’t want your WooCommerce checkout visitors to mess up with that, do you?
What about adding an “Email Verification” field? In this way, we can make sure they double check their entry – and also show an error message in case they don’t match!
Let’s see how I implemented this for a freelancing client of mine – I’m sure you will be grateful!

PHP Snippet: Add “Confirm Email Address” Field @ WooCommerce Checkout
/**
* @snippet Add "Confirm Email Address" Field @ WooCommerce Checkout
* @how-to Get CustomizeWoo.com FREE
* @author Rodolfo Melogli
* @testedwith WooCommerce 7
* @donate $9 https://businessbloomer.com/bloomer-armada/
*/
// ---------------------------------
// 1) Make original email field half width
// 2) Add new confirm email field
add_filter( 'woocommerce_checkout_fields' , 'bbloomer_add_email_verification_field_checkout' );
function bbloomer_add_email_verification_field_checkout( $fields ) {
$fields['billing']['billing_email']['class'] = array( 'form-row-first' );
$fields['billing']['billing_em_ver'] = array(
'label' => 'Confirm mail Address',
'required' => true,
'class' => array( 'form-row-last' ),
'clear' => true,
'priority' => 999,
);
return $fields;
}
// ---------------------------------
// 3) Generate error message if field values are different
add_action( 'woocommerce_checkout_process', 'bbloomer_matching_email_addresses' );
function bbloomer_matching_email_addresses() {
$email1 = $_POST['billing_email'];
$email2 = $_POST['billing_em_ver'];
if ( $email2 !== $email1 ) {
wc_add_notice( 'Your email addresses do not match', 'error' );
}
}