sendmail.php

<?php
require_once 'PHPMailer/Exception.php';
require_once 'PHPMailer/PHPMailer.php';
require_once 'PHPMailer/SMTP.php';

use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;
use PHPMailer\PHPMailer\SMTP;

// Instantiation and passing `true` enables exceptions
$mail = new PHPMailer(true);

try {
    //Server settings
    $mail->SMTPDebug = 0;                      // Enable verbose debug output
    $mail->isSMTP();                                            // Send using SMTP
    $mail->Host       = 'smtp.gmail.com';                    // Set the SMTP server to send through
    $mail->SMTPAuth = true;                             // Enable SMTP authentication
    $mail->Username   = 'Your Email Address';                     // SMTP username
    $mail->Password   = 'Your Password';                               // SMTP password
    $mail->SMTPSecure = PHPMailer::ENCRYPTION_STARTTLS;         // Enable TLS encryption; `PHPMailer::ENCRYPTION_SMTPS` encouraged
    $mail->Port       = 587;                                    // TCP port to connect to, use 465 for `PHPMailer::ENCRYPTION_SMTPS` above

    $mail->SMTPOptions = array(
        'ssl' => array(
            'verify_peer' => false,
            'verify_peer_name' => false,
            'allow_self_signed' => true
        )
    );

    //Recipients
    $mail->setFrom('Your Email Address', 'LMS');
    $mail->addAddress($email);     // Add a recipient
    //$mail->addAddress('ellen@example.com');               // Name is optional
    //$mail->addReplyTo('info@example.com', 'Information');
    //$mail->addCC('cc@example.com');
    //$mail->addBCC('bcc@example.com');

    // Attachments
    //$mail->addAttachment('/var/tmp/file.tar.gz');         // Add attachments
    //$mail->addAttachment('/tmp/image.jpg', 'new.jpg');    // Optional name

    // Content
    $mail->isHTML(true);                                  // Set email format to HTML
    $mail->Subject = $subject;
    $message = file_get_contents('../Mail.html');
    $message = str_replace("{{body}}", $body, $message);
    $message = str_replace("{{sub}}", $subject, $message);
    $mail->MsgHTML($message);

    //$mail->Body    = 'This is the HTML message body <b>in bold!</b>';
    //$mail->AltBody = 'This is the body in plain text for non-HTML mail clients';

    $mail->send();
    return true;
} catch (Exception $e) {
    return false;
}