Add filter for custom allowed email validation

@peppol yes we can do that in a future release, it’s a good idea. For now, if you need help patching something right this second, I do have a solution for you.

2 locations need to be touched:

1. class-mailchimp-woocommerce-single-order.php

    /**
     * @param $email
     * @param $order_id
     * @return bool
     */
    protected function shouldSkipOrder($email, $order_id)
    {
        // basically do whatever you need to do to decide the logic.
        //if (execute_your_custom_filter($email)) return true;

        if (!is_email($email)) {
            mailchimp_log('validation.bad_email', "Order #{$order_id} has an invalid email address. Skipping!");
            return true;
        }

        // make sure we can submit this order to MailChimp or skip it.
        if (mailchimp_email_is_amazon($email)) {
            mailchimp_log('validation.amazon', "Order #{$order_id} was placed through Amazon. Skipping!");
            return true;
        }

        if (mailchimp_email_is_privacy_protected($email)) {
            mailchimp_log('validation.gdpr', "Order #{$order_id} is GDPR restricted. Skipping!");
            return true;
        }

        return false;
    }

And also in the bootstrap.php file

/**
 * @param $email
 * @return bool
 */
function mailchimp_email_is_allowed($email) {
    // basically do whatever you need to do to decide the logic.
    //if (execute_your_custom_filter($email)) return false;

    if (!is_email($email) || mailchimp_email_is_amazon($email) || mailchimp_email_is_privacy_protected($email)) {
        return false;
    }
    return true;
}

We will think this through in our next release to add a custom filter for both skipping the list members and also the orders for you and report back. Again thanks for the idea. 🙂