內容簡介
Web357 SMTP Connect for Gmail 外掛讓您能夠透過 Gmail 或 Google Workspace 郵箱發送所有 WordPress 郵件，使用安全的 OAuth 2.0 認證，顯著提高郵件送達率，並簡化設置過程。
【主要功能】
• 一鍵連接 Gmail 或 Google Workspace 帳戶
• 通過 Gmail 的 SMTP 伺服器發送郵件
• 測試郵件工具，確認設置正確性
• 一鍵刪除存儲的訪問金鑰
• 兼容多種表單外掛及 WooCommerce
外掛標籤
開發者團隊
② 後台搜尋「Web357 SMTP Connect for Gmail」→ 直接安裝（推薦）
原文外掛簡介
The Web357’s SMTP Connect for Gmail WordPress plugin lets you send all your WordPress emails (WooCommerce notifications, Contact Form 7 / WPForms / Fluent Forms / Gravity Forms submissions, password resets, and any wp_mail() call) through your Gmail or Google Workspace mailbox, using secure OAuth 2.0 authentication. No stored SMTP passwords, no fragile app-password workarounds. Just connect your Google account once and your transactional emails will be sent reliably from your real mailbox, dramatically improving deliverability compared to your host’s default PHP mail() function. If you want a simple, secure way to fix WordPress email delivery using Gmail or Google Workspace, Web357 SMTP Connect for Gmail is for you.
Full setup, Google Cloud OAuth registration, and troubleshooting steps are in the official documentation.
External services
This plugin connects to Google’s identity and mail services so it can send WordPress emails through your Gmail or Google Workspace mailbox using OAuth 2.0. It requires a Google Cloud project and OAuth Client ID/Secret that you create and control.
Google’s identity platform (accounts.google.com, oauth2.googleapis.com) is used to authorize the plugin against your Google account and to exchange/refresh the resulting access token. When you click “Authenticate with Gmail” in the Configuration tab, and again automatically whenever a stored access token is near expiry, the plugin sends your app’s Client ID, Client Secret, redirect URI, and the OAuth authorization code or refresh token, and receives back an access token and refresh token in return. Right after you authorize, it also calls Google’s https://www.googleapis.com/oauth2/v3/userinfo endpoint once to read the connected account’s email address.
Terms of use: https://policies.google.com/terms. Privacy statement: https://policies.google.com/privacy
Gmail’s SMTP server (smtp.gmail.com) is used to actually send every outgoing email (the message subject, body, recipient addresses, headers, and attachments), authenticated via OAuth 2.0 (XOAUTH2), not a stored password. This happens every time WordPress (or any plugin using wp_mail()) sends an email, and when you use the built-in Test Email tool.
Sending mail over Gmail’s SMTP with OAuth requires Google’s full-account mail scope (https://mail.google.com/) rather than a narrower “send only” scope; this is a constraint of Gmail’s SMTP+XOAUTH2 authentication itself, not a plugin choice. The plugin only ever uses this access to send the emails WordPress generates; it does not read, modify, or delete anything in your mailbox.
No data is sent to Google until you complete the OAuth connection yourself.
Basic Features
OAuth 2.0 authentication via Google: connect your Gmail or Google Workspace account in one click, no app passwords required.
Reroute every wp_mail() call through Gmail’s SMTP server for reliable delivery and improved inbox placement.
Test Email tool: send a real test email from the WordPress admin to verify your setup before going live.
One-click delete: delete the stored access key whenever you want.
Compatible with WooCommerce, Contact Form 7, WPForms, Fluent Forms, Gravity Forms, MemberPress, LearnDash, and any plugin that uses wp_mail().
Translation-ready and works on any modern WordPress theme.
PRO Features
Upgrade to the Premium version to unlock:
Mail Log: view every sent, failed, and staged email with full headers, content preview, status, and timestamps. See the Mail Log documentation.
Mail Staging Mode: log emails to the database instead of sending them, perfect for staging and development environments.
Mail Throttle: limit how many emails per minute leave your site to avoid hitting Gmail’s sending limits.
Send BCC: automatically send a blind copy of every outgoing email to an internal address (great for record-keeping and compliance).
Default Reply-To: set a global reply-to address for all outgoing emails when one isn’t already specified by the form or plugin.
Extended SMTP configuration: custom From Name, encryption type, SMTP port, and an option to disable SSL verification for non-standard setups.
Priority support and ongoing updates.
Staging, throttle, BCC, and Reply-To are covered in the Advanced Configuration documentation.
