PHPMailer

<?php
use PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;
require './vendor/autoload.php';


$phpmailer = new PHPMailer\PHPMailer;
$phpmailer->isSMTP();
$phpmailer->Host = 'sandbox.smtp.mailtrap.io';
$phpmailer->SMTPAuth = true;
$phpmailer->Port = 2525;
$phpmailer->Username = 'your username';
$phpmailer->Password = 'your password';
$phpmailer->SMTPDebug = 2;                   // Enable verbose debug output
$phpmailer->setFrom('test@email.com', 'Name');
$phpmailer->addAddress('receiver1@email.net');
$phpmailer->isHTML(true);
$phpmailer->Subject = 'Subject';
$phpmailer->Body    = 'HTML message body in <b>bold</b>!';
$phpmailer->AltBody = 'Body in plain text for non-HTML mail clients';

$phpmailer->send();