Email Validation & Verification in PHP

A lightweight check (no SMTP probe): validates syntax, confirms the domain has MX records, and flags disposable/throwaway providers. Use it inline on sign-up forms.

<?php

use IpApiIo\Client;

$client = new Client(apiKey: getenv('IP_API_IO_KEY'));

$info = $client->emailInfo('user@example.com');

var_dump($info['syntax']['is_valid']); // true
var_dump($info['is_disposable']);      // false
var_dump($info['has_mx_records']);     // true
echo $info['mx_records'][0]['hostname'];

Advanced verification that connects to the mail server to confirm the mailbox is deliverable, and adds role-account, free-provider, catch-all and Gravatar signals.

$result = $client->validateEmail('user@example.com');

echo $result['reachable'];               // "yes" | "no" | "unknown"
var_dump($result['smtp']['deliverable']); // true
var_dump($result['smtp']['catch_all']);   // false
var_dump($result['disposable']);          // false
var_dump($result['role_account']);        // false  (e.g. info@, support@)
var_dump($result['free']);                // false  (e.g. gmail.com)
echo $result['suggestion'] ?? '';         // typo fix, e.g. "user@gmail.com"

Advanced-validate up to 100 addresses in one request — the building block for email list cleaning. Throws an InvalidArgumentException if the array is empty or longer than 100.

$batch = $client->validateEmailBatch([
    'user@example.com',
    'fake@mailinator.com',
    'info@example.org',
]);

echo $batch['totalProcessed'];          // 3
echo $batch['successfulValidations'];   // 3

foreach ($batch['results'] as $email => $result) {
    echo $email, ' ', $result['reachable'], ' ', $result['disposable'];
}