Docs MailFlow SMTP

Kaddora MailFlow SMTP 🎀

User Documentation:📜

Kaddora MailFlow SMTP is a professional WordPress email delivery and monitoring plugin designed to improve email reliability, deliverability, and management across WordPress websites. The plugin replaces the default WordPress mail system with secure SMTP-based delivery and supports multiple email providers including Gmail, Outlook, SendGrid, Mailgun, Brevo, Postmark, and Custom SMTP servers.

The plugin provides advanced email logging capabilities, allowing administrators to track sent and failed emails, resend messages, export logs, and monitor email activity through detailed debug events. Built-in alert systems support Email, Slack, Discord, Microsoft Teams, and Webhook notifications to ensure administrators are informed about delivery failures and system issues.

Kaddora MailFlow SMTP includes enterprise-level features such as Smart Email Routing, Backup Mailers, Rate Limiting, Email Queue Processing, Retry Engine, and Dead Letter Queue management to maximize email delivery success. Comprehensive reporting tools provide dashboard statistics, health monitoring, weekly summaries, and performance analytics.

The plugin also includes SMTP testing and diagnostics tools for troubleshooting email issues, along with compatibility support for WooCommerce, Contact Form 7, and WPForms. For agencies and enterprise environments, full WordPress Multisite support provides centralized network management, analytics, and reporting.

Built using WordPress coding standards and an object-oriented architecture, Kaddora MailFlow SMTP delivers a scalable, secure, and production-ready email infrastructure for modern WordPress websites.

1. Introduction 🎗️

Kaddora MailFlow SMTP is a powerful WordPress SMTP and email management plugin designed to improve email deliverability, monitoring, and reliability. It replaces the default WordPress mail system with secure SMTP providers and provides advanced tools for email tracking, diagnostics, reporting, and delivery optimization.

Key Highlights

2. Requirements & Compatibility 📌

WordPress: 6.0 or higher.
PHP: 7.4 or higher (PHP 8.2+ recommended).
MySQL: 5.7 or higher / MariaDB 10.3 or higher.
SMTP Providers: Gmail, Outlook, SendGrid, Mailgun, Brevo, Postmark, and Custom SMTP.
SSL/TLS: Required for secure email transmission.
WP-Cron: Enabled for Queue Processing, Retry Engine, Alerts, and Weekly Reports.
WooCommerce: Compatible with WooCommerce 6.0 or higher.
Contact Forms: Compatible with Contact Form 7 and WPForms.
Multisite: Fully compatible with WordPress Multisite installations.
Browser: Latest versions of Chrome, Firefox, Edge, and Safari.
Permissions: Administrator access required to configure SMTP settings and reports.

3. Plugin Installation 🦚

Method — Upload ZIP

4. Dashboard (Admin Panel)

The Dashboard serves as the central monitoring hub for Kaddora MailFlow SMTP. It provides a real-time overview of email delivery performance, queue status, failed email tracking, and overall system health. Administrators can quickly monitor email activity, identify delivery issues, review queue statistics, and access important actions from a single interface.

Highlights

5. SMTP

The SMTP Configuration section allows administrators to manage email delivery settings, provider credentials, queue behavior, backup mailers, rate limits, and alert preferences. This area acts as the control center for configuring how emails are sent, monitored, and protected against delivery failures.

Configuration Features
Supported SMTP Providers
Sender & SMTP Settings
Provider Credentials
Delivery & Queue Settings
Alert Settings

6. Logs

The Email Logs section provides a centralized view of all outgoing email activity generated through Kaddora MailFlow SMTP. It enables administrators to monitor email delivery status, inspect recipients, review delivery events, export records, and troubleshoot email-related issues from a single interface.

Email Log Features
Log Information Displayed
Available Actions
Delivery Status Types
Benefits

7. Tools

The Tools section provides quick access to utility features, diagnostics, and administrative tools required for monitoring, troubleshooting, and managing email delivery operations. It serves as a centralized workspace where administrators can perform testing, review system health, manage routing rules, and inspect delivery events without navigating through multiple plugin pages.

Features

Available Tools

Send Test Email

Verify SMTP configuration by sending a test email.

Features:

SMTP Health

Review the overall health and performance of configured mail providers.

Features:

Routing Rules

Manage email routing behavior and provider selection rules.

Features:

Debug Events

Review technical events and delivery-related system activity.

Features:

Benefits

8. Supports

The Reports section provides a comprehensive overview of email delivery performance, provider usage, and system reliability. It helps administrators monitor delivery success rates, identify failed emails, evaluate provider performance, and gain valuable insights into overall email activity through centralized analytics and reporting tools.

Features

9. Delivery

The Delivery section provides centralized monitoring and management of email delivery operations. It helps administrators track delivery events, monitor alerts, review operational issues, and manage delivery-related activities such as queue processing, routing behavior, failover handling, and notification systems to ensure reliable email delivery across the website.

Features

10. Integrations

The Integrations section provides visibility into email activity generated by connected WordPress plugins and third-party services. It helps administrators monitor integration-specific email delivery, track transactional emails, review integration performance, and ensure reliable communication across connected systems such as eCommerce platforms, contact forms, and other email-enabled applications.

Features

11. Performance & Optimization

12. FAQ 🌐

1. Which SMTP providers are supported by Kaddora MailFlow SMTP?
Kaddora MailFlow SMTP supports Gmail, Outlook, SendGrid, Mailgun, Brevo, Postmark, and Custom SMTP servers.

2. Can I view and track all outgoing emails?
Yes. The plugin includes a complete Email Logs system that allows you to monitor sent, failed, queued, and retried emails.

3. Does the plugin support WooCommerce email delivery?
Yes. Kaddora MailFlow SMTP is fully compatible with WooCommerce and can track transactional emails generated by WooCommerce stores.

4. What happens if my primary SMTP provider fails?
The Backup Mailer feature automatically switches email delivery to a secondary provider to help maintain email reliability.

5. Can I receive notifications when email delivery issues occur?
Yes. The plugin supports Email, Slack, Discord, Microsoft Teams, and Webhook alerts for delivery failures and operational events.

6. Is the plugin compatible with WordPress Multisite?
Yes. Kaddora MailFlow SMTP includes Multisite support with network-wide settings, reporting, monitoring, and analytics.

13. Support & Updates 🚒

For technical support, feature requests, bug reports, or plugin-related assistance, please contact the Kaddora Tech Support Team.

Support Includes:

Current Version: 1.0.0

Update Policy:

Thanks for choosing Kaddora MailFlow SMTP ❤️