Native Android app for managing Fastmail masked emails. Create, view, edit, and delete masked email addresses with Material 3 design.
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Paweł Orzech 367a7bb604
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FastMask

A native Android app for managing Fastmail masked emails. Create, view, edit, and manage your masked email addresses directly from your Android device.

Features

  • View Masked Emails - Browse all your Fastmail masked email addresses in a clean, organized list
  • Create New Masks - Generate new masked email addresses with optional descriptions and domain associations
  • Enable/Disable - Toggle masked emails on or off without deleting them
  • Edit Details - Update description, associated domain, and URL for any masked email
  • Copy to Clipboard - Quickly copy email addresses with one tap
  • Delete - Remove masked emails you no longer need
  • Search - Filter your masked emails to find what you need
  • Material You - Modern Material 3 design with dynamic theming support

Screenshots

Coming soon

Requirements

  • Android 8.0 (API 26) or higher
  • Fastmail account with API access

Installation

From GitHub Releases

  1. Download the latest APK from the Releases page
  2. Enable "Install from unknown sources" for your browser or file manager
  3. Open the APK file to install

Build from Source

  1. Clone the repository:

    git clone https://github.com/pawelorzech/FastMask.git
    
  2. Open the project in Android Studio

  3. Build and run on your device or emulator

Setup

  1. Create a Fastmail API token:

    • Log in to Fastmail
    • Go to SettingsPrivacy & SecurityIntegrationsAPI tokens
    • Click New API token
    • Give it a name (e.g., "FastMask")
    • Select the scope: Masked Email (read/write)
    • Copy the generated token
  2. Open FastMask and paste your API token to log in

Tech Stack

  • Kotlin - 100% Kotlin codebase
  • Jetpack Compose - Modern declarative UI
  • Material 3 - Latest Material Design components
  • Hilt - Dependency injection
  • Coroutines & Flow - Asynchronous programming
  • Retrofit + OkHttp - Network communication
  • Kotlinx Serialization - JSON parsing
  • JMAP Protocol - Fastmail's native API

Architecture

The app follows Clean Architecture principles with MVVM pattern:

app/
├── data/           # Data layer (API, repositories)
├── domain/         # Business logic (use cases, models)
├── di/             # Dependency injection modules
└── ui/             # Presentation layer (screens, viewmodels)

Privacy

  • Your API token is stored securely using Android's EncryptedSharedPreferences
  • The app communicates directly with Fastmail's API - no third-party servers
  • No analytics or tracking

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

License

This project is open source. See the LICENSE file for details.

Acknowledgments

  • Fastmail for their excellent JMAP API
  • JMAP specification for masked emails