What are best practices for troubleshooting email delivery issues in PHP?

Issue: When sending emails using PHP, sometimes the emails are not delivered to the recipient's inbox due to various reasons such as misconfigured SMTP settings, spam filters, or server issues. To troubleshoot email delivery issues in PHP, it is recommended to check the SMTP settings, ensure the email content is not flagged as spam, and verify that the server is properly configured to send emails. PHP Code Snippet: 

// Set the PHPMailer SMTP settings
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;

$mail = new PHPMailer(true);

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

// Set the email content
$mail->setFrom('your@example.com', 'Your Name');
$mail->addAddress('recipient@example.com', 'Recipient Name');
$mail->Subject = 'Subject of the email';
$mail->Body = 'This is the body of the email';

// Send the email
if(!$mail->send()) {
    echo 'Message could not be sent.';
    echo 'Mailer Error: ' . $mail->ErrorInfo;
} else {
    echo 'Message has been sent';
}

Keywords

SMTP PHPMailer SPF DKIM bounce handling

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