Site Mailer is a powerful WordPress plugin that replaces PHP mail with reliable SMTP and modern Email APIs for better deliverability. It ensures your emails land in inboxes, not spam, with detailed logs, analytics, and troubleshooting tools. Easy to set up, developer-friendly, and built for performance, it’s the secure way to send, track, and manage all your site’s transactional emails.
- SMTP replacement for wp_mail to prevent spam-folder issues
- Native Email API support (SendGrid, Mailgun, Amazon SES, Postmark, etc.)
- Full email logs with searchable history
- Open, click, bounce, and delivery tracking
- Resend, retry, and bulk re-queue failed emails
- One-click domain authentication guidance (SPF, DKIM, DMARC)
- OAuth2 and API key authentication for secure sending
- Per-recipient, per-email status and error insights
- Smart fallbacks: switch providers automatically on failure
- Test email tool with real-time diagnostics
- Built-in rate limiting and throttling controls
- Multisite compatible with network-level settings
- GDPR-friendly logging with retention controls
- Developer hooks, filters, and REST API endpoints
- Lightweight, fast, and compatible with major form and eCommerce plugins
