send.php

<?php 

        $name = $_POST['myname'];
        $email = $_POST['email'];
        $subject = $_POST['subject'];
        $message = $_POST['message'];

        // Import PHPMailer classes into the global namespace
        // These must be at the top of your script, not inside a function
        use PHPMailer\PHPMailer\PHPMailer;
        use PHPMailer\PHPMailer\Exception;

        // Load Composer's autoloader
        require './vendor/autoload.php';

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

        try {
            //Server settings
            $mail->SMTPDebug = 1;                                       // Enable verbose debug output
            $mail->isSMTP();                                            // Set mailer to use SMTP
            $mail->Host       = 'smtp.gmail.com';  // Specify main and backup SMTP servers
            $mail->SMTPAuth   = true;                                   // Enable SMTP authentication
            $mail->Username   = '*****@gmail.com';                     // SMTP username
            $mail->Password   = '****';                               // SMTP password
            $mail->SMTPSecure = 'tls';                                  // Enable TLS encryption, `ssl` also accepted
            $mail->Port       = 587;                                    // TCP port to connect to

            //Recipients
            $mail->setFrom($email, $name);
            $mail->addAddress('cheriyan.kevin@gmail.com', 'Kevin Cheriyan');     // Add a recipient

            $body = $message;

            $mail->isHTML(true);                                  // Set email format to HTML
            $mail->Subject = 'CartoLingo: ' . $subject;
            $mail->Body    = $message;
            $mail->AltBody = strip_tags($message);

            $mail->send();
            echo 'Message has been sent';
        } catch (Exception $e) {
            echo "Message could not be sent. Mailer Error: {$mail->ErrorInfo}";
        }
    ?>