What are common pitfalls when integrating a PHP mailer like PHPMailer into a website, especially after a server migration?

One common pitfall when integrating a PHP mailer like PHPMailer into a website after a server migration is ensuring that the SMTP settings are correctly configured for the new server. This includes updating the host, port, username, password, and any other relevant settings. Additionally, make sure that any firewall or security settings on the new server are not blocking outgoing mail connections. 

// Example SMTP settings for PHPMailer
$mail->isSMTP();
$mail->Host = 'new_host';
$mail->Port = 587;
$mail->SMTPAuth = true;
$mail->Username = 'new_username';
$mail->Password = 'new_password';
$mail->SMTPSecure = 'tls';
$mail->SMTPDebug = 0; // Set to 2 for debugging

Keywords

PHP PHPMailer server migration SMTP email delivery

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