Post SMTP (Activated) v3.9.1 - WordPress SMTP Plugin With OAuth & Mobile Alerts

Post SMTP is a WordPress SMTP plugin that replaces the default PHP mail function with external SMTP providers to improve email deliverability. It supports 15+ SMTP services including Gmail, Microsoft 365, Amazon SES, Mailgun, SendGrid, Brevo, and Zoho Mail, and includes features for email logging, tracking, and delivery monitoring.

Key Features

• 3-Step Setup Wizard - Configures SMTP providers quickly with one-click setup for Gmail and Microsoft 365 without requiring manual credential entry
• 15+ SMTP Provider Integrations - Supports Gmail, Microsoft 365, Amazon SES, Mailgun, SendGrid, Brevo, Zoho Mail, Postmark, and other SMTP services
• OAuth 2.0 Authentication - Securely authenticates SMTP accounts using API keys instead of storing credentials
• Detailed Email Logs - Displays, filters, and tracks the status of all WordPress emails with error messages and delivery information
• Email Delivery Reporting - Provides comprehensive statistics on email performance including open tracking and delivery metrics
• SPF, DKIM, and DMARC Checks - Includes spam score checker that analyzes DNS records to monitor domain reputation
• Fallback SMTP Mailer - Allows configuration of a backup SMTP provider to send emails if the primary mailer fails
• Instant Failure Notifications - Sends alerts via email, Slack, Twilio SMS, webhooks, or Chrome extension when email delivery fails
• Weekly Email Summary - Delivers a weekly report showing total emails sent, failed deliveries, successful sends, and recent logs
• Mobile App - Monitors emails, tracks delivery status, receives instant alerts, and previews emails from mobile devices
• Resend Failed Emails - Allows resending of failed emails with a single click (Pro version)
• Multi-Site Monitoring - Tracks email logs and failure notifications across multiple WordPress sites from one app (Pro version)
• Chrome Extension - Delivers WordPress email failure alerts directly to the browser

Best For

This plugin is designed for WordPress site owners who experience email delivery issues, including emails ending up in spam or failing to send entirely. It is particularly useful for sites using transactional emails, membership notifications, contact forms, or e-commerce order confirmations. The plugin addresses the limitations of WordPress's default PHP mail function by routing emails through professional SMTP providers with proper authentication protocols.