What are common issues when trying to set up PHP email sending functionality?

Common issues when setting up PHP email sending functionality include incorrect SMTP settings, server configuration issues, and spam filters blocking outgoing emails. To solve these issues, double-check the SMTP server settings, ensure that the server allows outgoing emails, and monitor spam filter settings to prevent emails from being marked as spam. 

// Example PHP code snippet to set up email sending functionality with correct SMTP settings

$to = "recipient@example.com";
$subject = "Test Email";
$message = "This is a test email.";

$headers = "From: sender@example.com\r\n";
$headers .= "Reply-To: sender@example.com\r\n";
$headers .= "X-Mailer: PHP/" . phpversion();

$mail_success = mail($to, $subject, $message, $headers);

if ($mail_success) {
    echo "Email sent successfully.";
} else {
    echo "Failed to send email.";
}

Keywords

SMTP PHPMailer authentication spam folder error handling

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