DixonSMTP for Outlook & Microsoft 365
| 开发者 | dixonem |
|---|---|
| 更新时间 | 2026年7月22日 00:06 |
| PHP版本: | 7.4 及以上 |
| WordPress版本: | 7.0 |
| 版权: | GPLv2 or later |
| 版权网址: | 版权信息 |
详情介绍:
wp_mail()) through Microsoft's SMTP servers — authenticated, encrypted, and deliverable.
100% free. No premium upsell, no paid tiers, no feature gating.
Why OAuth 2.0?
Microsoft has deprecated Basic Authentication for Exchange Online and is progressively disabling password-based SMTP AUTH (new Microsoft 365 tenants have it off by default). OAuth 2.0 ("Modern Authentication") is the supported, secure path forward — which is why this plugin is OAuth-only by design. It implements the full Microsoft identity platform authorization code flow with automatic token refresh, so you sign in once and it keeps working.
Features
- OAuth 2.0 (Modern Auth) for Microsoft 365 / Entra ID — authorization code flow, automatic access-token refresh, encrypted token storage
- From Email / From Name with optional force-override (recommended — Microsoft rejects mismatched senders)
- Test email tool with a full SMTP debug transcript
- Email log (last 10–500 emails, configurable) with status and error details in a custom table
- Optional fallback to the default PHP mailer when SMTP fails
- Failure notifications to the site admin after repeated errors (rate-limited)
- Debug mode compatible with
WP_DEBUG_LOG - Multisite compatible (network activation supported; settings are per-site)
- Secrets (client secret, OAuth tokens) stored encrypted (AES-256 keyed from your WordPress salts)
- Translation-ready, fully sanitized/escaped, capability + nonce protected
wp_mail(): WPForms, Contact Form 7, Gravity Forms, Ninja Forms, WooCommerce, Easy Digital Downloads, membership and newsletter plugins, etc.
安装:
- Upload the
dixonsmtp-for-outlook-microsoft-365folder to/wp-content/plugins/, or install the ZIP via Plugins → Add New → Upload Plugin. - Activate the plugin through the Plugins screen.
- Go to Settings → Outlook SMTP.
- On the General tab: set your From Email (the Microsoft mailbox you will authenticate) and From Name, and enable the mailer.
- Follow the OAuth setup below.
- Use the Test Email tab to confirm delivery.
屏幕截图:
常见问题:
Which SMTP settings do I use for Microsoft 365?
Host smtp.office365.com, port 587, encryption TLS. These are the plugin defaults.
I get "5.7.139 Authentication unsuccessful, SmtpClientAuthentication is disabled"
SMTP AUTH is disabled for the tenant or mailbox. Follow step 5 of the OAuth setup above.
I get "5.7.60 Client does not have permissions to send as this sender"
Your From Email must be the authenticated mailbox itself, or an address that mailbox has Send As rights for. Enable "Force From Address" and set the From Email to the connected mailbox.
Does this work with personal Outlook.com accounts?
Yes — register the Azure app with support for personal Microsoft accounts and set Tenant ID to common. Host stays smtp.office365.com (or smtp-mail.outlook.com).
Where are my credentials stored?
In your WordPress database, encrypted with AES-256 using a key derived from your site's unique AUTH_KEY/SECURE_AUTH_KEY salts. Nothing is sent to any third party except Microsoft's own OAuth/SMTP endpoints.
The OAuth redirect returns a 404
Your REST API permalinks are disabled or blocked. Enable pretty permalinks (Settings → Permalinks) and make sure /wp-json/ is reachable, then re-copy the Redirect URI.
Is Multisite supported?
Yes. The plugin can be network-activated; each site keeps its own settings, connection and log.
更新日志:
- Initial release: OAuth 2.0 SMTP for Outlook / Microsoft 365, email log, test tool, fallback mailer, failure notifications, encrypted secret storage, multisite support.