Is the content in functions.php visible?

Hi,

I’m having problems with the emails headers sent from woocommerce.

I’ve found a solution in this forum and implies adding the email password in the functions.php file.

Is this safe? Can anyone see my email password? If not, how can I solve this?

Thanks in advance.

This is the code:

function my_phpmailer_example( $phpmailer ) {
    $phpmailer->isSMTP();     
    $phpmailer->Host="smtp.example.com";
    $phpmailer->SMTPAuth = true; // Ask it to use authenticate using the Username and Password properties
    $phpmailer->Port = 25;
    $phpmailer->Username="yourusername";
    $phpmailer->Password = 'yourpassword';
 
    // Additional settings…
    //$phpmailer->SMTPSecure="tls"; // Choose 'ssl' for SMTPS on port 465, or 'tls' for SMTP+STARTTLS on port 25 or 587
    //$phpmailer->From = "[email protected]";
    //$phpmailer->FromName = "Your Name";
}
add_action( 'phpmailer_init', 'my_phpmailer_example' );