What is the best practice for sending bulk emails in PHP while managing a large number of email addresses?

When sending bulk emails in PHP to a large number of email addresses, it is important to use a third-party email service provider like SendGrid or Mailchimp to handle the email delivery and avoid getting flagged as spam. These services provide APIs that allow you to easily send bulk emails while managing bounces, unsubscribes, and other email-related tasks efficiently. 

// Example using SendGrid API to send bulk emails
require 'vendor/autoload.php'; // Include SendGrid library

$apiKey = 'YOUR_SENDGRID_API_KEY';
$email = new \SendGrid\Mail\Mail();
$email->setFrom("your-email@example.com", "Your Name");
$email->setSubject("Subject of the email");
$email->addTo("recipient1@example.com", "Recipient 1");
$email->addTo("recipient2@example.com", "Recipient 2");
// Add more recipients as needed

$sendgrid = new \SendGrid($apiKey);

try {
    $response = $sendgrid->send($email);
    echo "Emails sent successfully!";
} catch (Exception $e) {
    echo 'Caught exception: ' . $e->getMessage() . "\n";
}

Keywords

SMTP PHPMailer mailing list batch processing email validation

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