WordPress PHPMailer SMTP

SMTP.php

<?php
namespace Extremis\Core;

use PHPMailer\PHPMailer\PHPMailer;

class SMTP
{

    public function __construct()
    {

        add_action('phpmailer_init', [$this, 'configureSMTP']);

    }

    public function configureSMTP(PHPMailer $phpmailer)
    {
        $phpmailer->isSMTP();
        $phpmailer->Host       = 'server.hostname.ili.ip';
        $phpmailer->Port       = '587';
        $phpmailer->SMTPSecure = true;
        $phpmailer->SMTPAuth   = true;
        $phpmailer->Username   = 'email@adresa.domen';
        $phpmailer->Password   = 'sifra_za_email';
        $phpmailer->From       = 'email@adresa.domen';
        $phpmailer->FromName   = 'Ime sa kog se salje';
    }

}