What are common pitfalls when sending emails using PHP mailers?

Common pitfalls when sending emails using PHP mailers include not properly setting the headers, failing to sanitize user input, and not handling errors effectively. To avoid these pitfalls, make sure to set the necessary headers, sanitize user input to prevent injection attacks, and implement error handling to address any issues that may arise during the email sending process. 

// Example code snippet to properly set headers, sanitize user input, and handle errors when sending emails using PHP mailers

// Set necessary headers
$headers = "From: sender@example.com\r\n";
$headers .= "Reply-To: sender@example.com\r\n";
$headers .= "Content-type: text/html\r\n";

// Sanitize user input
$subject = filter_var($_POST['subject'], FILTER_SANITIZE_STRING);
$message = filter_var($_POST['message'], FILTER_SANITIZE_STRING);

// Send email
if (mail('recipient@example.com', $subject, $message, $headers)) {
    echo "Email sent successfully!";
} else {
    echo "Failed to send email. Please try again.";
}

Keywords

PHP mailers SMTP email headers spam filters authentication errors

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