smtp-edc

Product Requirements Document: SMTP-EDC Wails UI

Document Information

• Version: 1.0
• Date: January 2025
• Author: Development Team
• Status: Draft

Executive Summary

This document defines the requirements for converting SMTP-EDC from a command-line interface tool to a modern desktop application using the Wails framework. The new GUI will provide an intuitive interface for SMTP testing while maintaining all existing functionality and adding enhanced user experience features.

Product Overview

Vision Statement

Transform SMTP-EDC into a user-friendly desktop application that makes SMTP testing accessible to both technical and non-technical users while maintaining the power and flexibility of the original CLI tool.

Product Goals

1. Accessibility: Make SMTP testing available to users who prefer graphical interfaces
2. Efficiency: Streamline common SMTP testing workflows through intuitive UI
3. Maintainability: Preserve existing code architecture while enabling future enhancements
4. Cross-Platform: Ensure consistent experience across Windows, macOS, and Linux

Success Criteria

• 100% feature parity with CLI version
• Reduced onboarding time for new users by 70%
• Increased user adoption by providing GUI alternative
• Maintained performance characteristics of CLI version

Target Users

Primary Users

1. System Administrators
   • Need to test SMTP configurations
   • Value both CLI and GUI options
   • Require detailed debugging information
2. Email Developers
   • Testing email functionality during development
   • Need template and attachment testing
   • Require integration with development workflows
3. IT Support Personnel
   • Troubleshooting email delivery issues
   • Prefer GUI for step-by-step testing
   • Need clear error messages and guidance

Secondary Users

1. Security Auditors
   • Testing SMTP security configurations
   • Need detailed protocol analysis
   • Require comprehensive logging
2. Quality Assurance Engineers
   • Automated testing of email functionality
   • Need scriptable operations
   • Require test result documentation

Functional Requirements

Core Features (Must Have)

F1: Connection Management

• F1.1: Configure SMTP server settings (host, port, encryption)
• F1.2: Test connection before sending messages
• F1.3: Save and manage multiple server profiles
• F1.4: Import/export connection profiles
• F1.5: Support for TLS/STARTTLS configurations

F2: Authentication

• F2.1: Support PLAIN authentication method
• F2.2: Support LOGIN authentication method
• F2.3: Support CRAM-MD5 authentication method
• F2.4: Support OAuth2 authentication flow
• F2.5: Secure credential storage and management
• F2.6: Authentication testing without sending messages

F3: Message Composition

• F3.1: Rich text editor for email body composition
• F3.2: HTML and plain text message support
• F3.3: Custom header configuration
• F3.4: Multiple recipient support (TO, CC, BCC)
• F3.5: Subject line configuration
• F3.6: Message preview functionality

F4: Template Management

• F4.1: Create and edit email templates
• F4.2: Template variable substitution
• F4.3: Template library management
• F4.4: Import templates from files
• F4.5: Export templates for sharing

F5: Attachment Handling

• F5.1: Drag-and-drop file attachment
• F5.2: Browse and select file attachments
• F5.3: Multiple attachment support
• F5.4: Attachment preview (for common file types)
• F5.5: Attachment size validation

F6: Testing and Debugging

• F6.1: Send test messages with full SMTP transaction logging
• F6.2: Real-time protocol conversation display
• F6.3: Verbose mode for detailed debugging
• F6.4: Error highlighting and explanation
• F6.5: Transaction history with search/filter capabilities

F7: Configuration Management

• F7.1: Application settings panel
• F7.2: Import existing YAML configurations
• F7.3: Export configurations for backup
• F7.4: Default value management
• F7.5: Configuration validation

Enhanced Features (Should Have)

E1: User Experience Enhancements

• E1.1: Quick setup wizard for common email providers
• E1.2: Connection troubleshooting assistant
• E1.3: Keyboard shortcuts for power users
• E1.4: Dark/light theme support
• E1.5: Customizable interface layout

E2: Advanced Testing Features

• E2.1: Batch message sending with variables
• E2.2: Load testing capabilities (controlled)
• E2.3: Message delivery timing analysis
• E2.4: Automated test scenarios
• E2.5: Test result export (CSV, JSON)

E3: Integration Features

• E3.1: Command-line compatibility mode
• E3.2: API for external tool integration
• E3.3: Plugin system for extensions
• E3.4: Integration with popular email services
• E3.5: CI/CD pipeline integration support

Future Features (Nice to Have)

N1: Advanced Analytics

• N1.1: Performance metrics dashboard
• N1.2: Success/failure rate tracking
• N1.3: Historical trend analysis
• N1.4: Custom reporting capabilities

N2: Collaboration Features

• N2.1: Shared template repositories
• N2.2: Team configuration sharing
• N2.3: Test result sharing
• N2.4: Multi-user workspace support

Non-Functional Requirements

Performance Requirements

• P1: Application startup time < 3 seconds
• P2: Memory usage baseline < 200MB
• P3: Message sending performance equivalent to CLI version
• P4: UI responsiveness during long operations
• P5: Bundle size < 100MB

Security Requirements

• S1: Secure credential storage using OS keychain
• S2: No plain text password storage
• S3: Encrypted configuration export
• S4: Secure handling of sensitive message content
• S5: Certificate validation for TLS connections

Compatibility Requirements

• C1: Windows 10+ support
• C2: macOS 10.15+ support
• C3: Linux (Ubuntu 18.04+, CentOS 7+) support
• C4: Backward compatibility with existing SMTP-EDC configurations
• C5: Modern web standards compliance in UI rendering

Usability Requirements

• U1: Intuitive interface requiring minimal training
• U2: Comprehensive in-app help and documentation
• U3: Clear error messages with suggested resolutions
• U4: Accessible design following WCAG 2.1 guidelines
• U5: Responsive design for different screen sizes

Reliability Requirements

• R1: 99.9% uptime during normal operations
• R2: Graceful handling of network failures
• R3: Automatic recovery from transient errors
• R4: Data persistence across application restarts
• R5: Comprehensive error logging

User Interface Requirements

Design System

Color Scheme

• Primary: #FFFFFF (White) - Main backgrounds, primary text
• Secondary: #253238 (Dark blue-gray) - Navigation, headers, borders
• Accent: #FF7C1A (Orange) - Call-to-action buttons, highlights, active states
• Supporting Colors:
  • Success: #10B981 (Green)
  • Warning: #F59E0B (Amber)
  • Error: #EF4444 (Red)
  • Info: #3B82F6 (Blue)

Typography

• Headers: System font stack (SF Pro/Segoe UI/Inter), weights 600-700
• Body Text: System font stack, weights 400-500
• Code/Monospace: JetBrains Mono/Monaco for logs and technical content

Layout Structure

Main Application Layout

1. Header Bar: Application title, menu, and global actions
2. Sidebar Navigation: Primary feature navigation
3. Main Content Area: Feature-specific interfaces
4. Status Bar: Connection status, progress indicators

Key Interfaces

1. Connection Setup
   • Tabbed interface for different connection types
   • Real-time connection testing
   • Profile management sidebar
2. Message Composer
   • Split-pane layout (composition/preview)
   • Template selector dropdown
   • Attachment management panel
3. Testing Dashboard
   • Live log display with syntax highlighting
   • Collapsible transaction details
   • Filterable history panel
4. Settings Panel
   • Categorized settings with search
   • Import/export options
   • Theme and appearance controls

Interaction Patterns

• Progressive Disclosure: Show basic options first, advanced options on demand
• Immediate Feedback: Real-time validation and status updates
• Contextual Help: Tooltips and inline guidance
• Keyboard Navigation: Full keyboard accessibility
• Drag and Drop: File attachments and template management

Technical Constraints

Framework Requirements

• Wails v2: Latest stable version for desktop application framework
• Go Backend: Maintain existing Go codebase with minimal modifications
• Frontend: React with TypeScript for type safety and developer experience
• Build System: Wails native build system with cross-platform support

Integration Constraints

• Existing Code: Must leverage existing internal packages without major refactoring
• Configuration: Must support existing YAML configuration format
• CLI Compatibility: Maintain ability to run CLI version alongside GUI
• Dependencies: Minimize new external dependencies

Deployment Constraints

• Distribution: Support native packaging for each platform
• Installation: Standard OS installation mechanisms (MSI, DMG, DEB/RPM)
• Updates: Built-in update mechanism consideration
• Signing: Code signing for all platforms

Success Metrics

Adoption Metrics

• Downloads: Track GUI version adoption vs CLI usage
• User Retention: 30-day and 90-day active users
• Feature Usage: Most/least used features analytics
• User Feedback: App store ratings and review sentiment

Performance Metrics

• Application Performance: Startup time, memory usage, responsiveness
• Feature Performance: Message sending success rates, connection times
• Error Rates: Application crashes, failed operations
• Resource Usage: CPU and memory consumption monitoring

Quality Metrics

• Bug Reports: Number and severity of reported issues
• Test Coverage: Automated test coverage percentage
• Documentation Quality: Help system usage and effectiveness
• Accessibility Compliance: WCAG 2.1 conformance level

Dependencies and Assumptions

External Dependencies

• Wails Framework: Stable v2 release with required features
• Go Runtime: Minimum Go 1.19 for development
• Node.js: For frontend development and build process
• Platform SDKs: Native development tools for each target platform

Assumptions

• User Environment: Users have modern desktop environments
• Network Access: Internet connectivity for initial setup and updates
• File System: Standard file system access permissions
• Email Servers: Standard SMTP protocol compliance

Risk Mitigation

• Framework Stability: Regular updates and community support monitoring
• Platform Changes: OS update testing and compatibility verification
• Performance Issues: Early performance testing and optimization
• User Adoption: Parallel CLI maintenance during transition period

Release Strategy

Phased Rollout

1. Alpha Release: Internal testing with core features
2. Beta Release: Limited external testing with feedback collection
3. Release Candidate: Feature-complete version for final validation
4. General Availability: Public release with full support

Feature Rollout

• Phase 1: Core SMTP testing functionality
• Phase 2: Advanced features and integrations
• Phase 3: Enhanced user experience features
• Phase 4: Analytics and collaboration features

Support Strategy

• Documentation: Comprehensive user guides and API documentation
• Community: GitHub issues and discussion forums
• Professional: Commercial support options for enterprise users
• Migration: Tools and guides for CLI to GUI transition

This PRD provides a comprehensive foundation for developing the SMTP-EDC Wails UI while ensuring all stakeholder needs are addressed and success can be measured effectively.

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