lunexia SMTP Pro

Description

lunexia SMTP Pro is a simple, modern, and secure WordPress plugin that enables you to send all outgoing WordPress emails through Gmail using OAuth 2.0 authentication or via custom SMTP. It integrates seamlessly with WordPress’s PHPMailer, providing reliable email delivery without exposing sensitive passwords.

Features:
* OAuth 2.0 authentication with Gmail (no app passwords required)
* Standard custom SMTP support (TLS/SSL encryption)
* Real-time email logging with status tracking (sent/failed)
* Instant test email utility with delivery reports
* Clean and intuitive modern admin dashboard
* Lightweight, secure, and developer-friendly

External services

This plugin connects to external services provided by Google to handle OAuth 2.0 authentication and send emails through Gmail:

1. Google OAuth 2.0 Service:

* Purpose: Authenticates your WordPress site with your Google account using secure OAuth 2.0.
* Data sent: Your Client ID, Client Secret, redirect URI, and authorization code are sent to https://accounts.google.com/o/oauth2/v2/auth and https://oauth2.googleapis.com/token when you initiate the connection in the plugin settings and during automatic access token refreshes.
* Terms of Service: https://policies.google.com/terms
* Privacy Policy: https://policies.google.com/privacy

1. Google UserInfo API:

* Purpose: Retrieves the authenticated user’s email address to verify connection and set the default sender address.
* Data sent: An OAuth 2.0 Bearer access token is sent in the HTTP authorization header to https://www.googleapis.com/oauth2/v1/userinfo immediately after successful OAuth authorization.
* Terms of Service: https://policies.google.com/terms
* Privacy Policy: https://policies.google.com/privacy

1. Gmail REST API:

* Purpose: Sends outgoing emails from WordPress through Gmail.
* Data sent: Recipient email address, email subject, email body (HTML/plain text), and email headers are transmitted to https://gmail.googleapis.com/gmail/v1/users/me/messages/send whenever WordPress dispatches an email (e.g. notifications, test emails, form submissions, password resets).
* Terms of Service: https://policies.google.com/terms
* Privacy Policy: https://policies.google.com/privacy

Technical details