In what scenarios would it be necessary to use the mail() function in PHP for sending emails, and what are the potential pitfalls to watch out for?

The mail() function in PHP is necessary when you need to send emails from a web application, such as sending confirmation emails after a user signs up or resetting a password. However, there are potential pitfalls to watch out for, such as emails being marked as spam if not properly configured or formatted. It's important to ensure that the email headers are set correctly and that the content is well-formatted to avoid these issues. 

$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 .= "MIME-Version: 1.0\r\n";
$headers .= "Content-type: text/html; charset=iso-8859-1\r\n";

if(mail($to, $subject, $message, $headers)){
    echo "Email sent successfully.";
} else {
    echo "Email sending failed.";
}

Keywords

mail() function PHP sending emails scenarios potential pitfalls

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