PHPMailer Configuration with Zoho SMTP

Zoho SMTP Settings

Setting	SSL (Port 465)	TLS (Port 587)
SMTP Host	smtp.zoho.com	smtp.zoho.com
Port	465	587
Encryption	SSL	TLS/STARTTLS
Username	full email	full email
Password	email password	email password

PHPMailer Code Example

COPY
<?php
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\SMTP;
use PHPMailer\PHPMailer\Exception;

require 'lib/PHPMailer/PHPMailer.php';
require 'lib/PHPMailer/SMTP.php';
require 'lib/PHPMailer/Exception.php';

function sendTokenEmail(string $to, string $token): bool {
    $mail = new PHPMailer(true);
    try {
        $mail->isSMTP();
        $mail->Host       = 'smtp.zoho.com';
        $mail->SMTPAuth   = true;
        $mail->Username   = 'info@yourdomain.com';
        $mail->Password   = 'your-zoho-password';
        $mail->SMTPSecure = PHPMailer::ENCRYPTION_SMTPS;
        $mail->Port       = 465;

        $mail->setFrom('info@yourdomain.com', 'Your App Name');
        $mail->addAddress($to);

        $mail->isHTML(false);
        $mail->Subject = 'Your Login Token';
        $mail->Body    = "Your one-time login token: $token";

        $mail->send();
        return true;
    } catch (Exception $e) {
        error_log("Email error: {$mail->ErrorInfo}");
        return false;
    }
}

File Structure

your-project/
└── lib/
    └── PHPMailer/
        ├── PHPMailer.php
        ├── SMTP.php
        └── Exception.php

Or install via Composer:

COPY
composer require phpmailer/phpmailer

Important Notes

• For reliable delivery to Gmail, ensure your domain has SPF and DKIM records configured (Cloudflare + Zoho setup)
• Store SMTP credentials in config.php only (never commit to Git)
• Zoho free plan supports up to ~500 emails/day from the SMTP relay