What are potential reasons for slow email sending and script timeouts when sending newsletters in PHP?

Potential reasons for slow email sending and script timeouts when sending newsletters in PHP could be due to the server's email sending limits, inefficient code, or large email lists causing the script to timeout. To solve this, consider optimizing the code for better performance, breaking down the email sending process into smaller chunks, and utilizing a third-party email sending service for large email lists. 

// Example code snippet using a third-party email sending service like Mailchimp

require('vendor/autoload.php');

use \DrewM\MailChimp\MailChimp;

$apiKey = 'YOUR_MAILCHIMP_API_KEY';
$listId = 'YOUR_MAILCHIMP_LIST_ID';

$MailChimp = new MailChimp($apiKey);

$batch = array();

// Add email addresses to the batch
$batch[] = array('email' => 'example1@example.com');
$batch[] = array('email' => 'example2@example.com');
$batch[] = array('email' => 'example3@example.com');

// Send emails in batches
$result = $MailChimp->post("lists/$listId", [
    'members' => $batch,
]);

if ($MailChimp->success()) {
    echo 'Emails sent successfully!';
} else {
    echo 'Error: ' . $MailChimp->getLastError();
}

Keywords

PHP email sending script timeouts performance optimization SMTP.

Related Questions