<?php
use PHPMailer\PHPMailer\PHPMailer;

$phpMailer = new PHPMailer(true);
$phpMailer->isSMTP();
$phpMailer->Host = "smtp.zoho.com";
$phpMailer->SMTPAuth = true;
$phpMailer->Username = "your-user";
$phpMailer->Password = "your-password";
$phpMailer->SMTPSecure = "tls";
$phpMailer->Port = 587;
$phpMailer->isHTML(true);
$phpMailer->CharSet = "UTF-8";
$phpMailer->setFrom("mail-user", "mail-name");

$phpMailer->addAddress("mail-to");
$phpMailer->Subject = "subject";
$phpMailer->Body = "mail-body";
$phpMailer->send();