What are the potential pitfalls of sending bulk emails using PHP?

One potential pitfall of sending bulk emails using PHP is that it can lead to your emails being marked as spam by email providers. To avoid this, you should use a reliable SMTP server to send your emails and ensure that your emails are compliant with anti-spam regulations. 

// Example of sending bulk emails using a reliable SMTP server

use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;

require 'vendor/autoload.php';

$mail = new PHPMailer(true);

try {
    $mail->isSMTP();
    $mail->Host = 'smtp.example.com';
    $mail->SMTPAuth = true;
    $mail->Username = 'your@example.com';
    $mail->Password = 'yourpassword';
    $mail->SMTPSecure = 'tls';
    $mail->Port = 587;

    $mail->setFrom('your@example.com', 'Your Name');
    $mail->addAddress('recipient1@example.com', 'Recipient Name');
    $mail->addAddress('recipient2@example.com', 'Recipient Name');

    $mail->isHTML(true);
    $mail->Subject = 'Subject';
    $mail->Body = 'Email body content';

    $mail->send();
    echo 'Email sent successfully';
} catch (Exception $e) {
    echo 'Email could not be sent. Mailer Error: ' . $mail->ErrorInfo;
}

Keywords

SMTP spam filters rate limiting bounce handling email headers

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