add_action( 'phpmailer_init', 'my_phpmailer_example' );
function my_phpmailer_example( $phpmailer ) {
    $phpmailer->isSMTP();
    //$phpmailer->Host = 'smtp.example.com';
    //    $phpmailer->SMTPAuth = true; // Force it to use Username and Password to authenticate
    $phpmailer->Port = 25;
    //    $phpmailer->Username = 'yourusername';
    //    $phpmailer->Password = 'yourpassword';

    // Additional settings…
    //$phpmailer->SMTPSecure = "tls"; // Choose SSL or TLS, if necessary for your server
    $phpmailer->setFrom( "fromemail@bla.com", "From Name" );
    $phpmailer->addAddress( "youremail@bla.com", "Your name" );
    $phpmailer->Subject    = "Testing PHPMailer";
    $phpmailer->Body     = "Hurray! nn Great.";
    if( !$phpmailer->send() ) {
        echo "Mailer Error: " . $phpmailer->ErrorInfo;
    } else {
        echo "Message sent!";
    }

}