Changelog

All notable changes to SendGrail are documented on this page.

v1.0.0 Initial Release

Released: 2026-05-08

Features

• SMTP / API Connections -- Create and manage multiple connections with support for 16 pre-configured providers (Gmail, Outlook / Microsoft 365, SendGrid, Mailgun, Amazon SES, Postmark, Mandrill, Elastic Email, SMTP2GO, Zoho Mail, Brevo, Netcore, SparkPost, SendLayer, Mailjet, Resend) plus custom SMTP and PHP mail.
• Default and Fallback Connections -- Set a primary connection for all outgoing email with an optional fallback connection for automatic failover.
• Email Logging -- Log all outgoing emails with full metadata including recipients, subject, status, and timestamps. Optional full body storage.
• Open Tracking -- Track email opens via an invisible tracking pixel injected into HTML emails.
• Click Tracking -- Track link clicks by routing through a tracking endpoint before redirecting to the original URL.
• Smart Routing -- Route emails through different SMTP connections based on sender address, recipient, or domain rules.
• Setup Wizard -- Guided four-step wizard for first-time configuration with automatic provider detection and credential validation.
• Test Email -- Send a real test email from a dedicated page to verify credentials and end-to-end delivery.
• Failure Notifications -- Receive email alerts when delivery fails through all configured connections.
• Weekly Summary Reports -- Scheduled email reports with delivery statistics, failure counts, and engagement metrics.
• Dashboard -- Overview of recent email activity, delivery success rates, and connection status at a glance.
• Log Retention -- Automatic cleanup of email logs older than the configured retention period.
• WordPress Default Mail Fallback -- Optional last-resort fallback to PHP mail() when all SMTP connections fail.
• Debug Mode -- Detailed SMTP transaction logging to wp-content/debug.log for troubleshooting.
• Dark and Light Themes -- Admin interface supports both dark and light themes with automatic detection.
• UTC Date Standardization -- All dates stored and displayed in UTC for consistency across time zones.