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FastMask – Fastmail Masks on Windows Pc

Developed By: Paweł Orzech

License: Free

Rating: 5,0/5 - 1 votes

Last Updated: August 04, 2026

Download on Windows PC

Compatible with Windows 10/11 PC & Laptop

App Details

Version 1.10.2
Size 1 MB
Release Date August 04, 26
Category Productivity Apps

What's New:
Fixes a crash that could stop FastMask from opening. On some devices the welcome screen closed the app instead of loading, because part of the app icon artwork... [see more]

Description from Developer:
FastMask is a fast, private, native Android client for managing your Fastmail masked email addresses.

Masked emails are disposable forwarding addresses that protect your real inbo... [read more]

App preview ([see all 7 screenshots])

App preview

About this app

On this page you can download FastMask – Fastmail Masks and install on Windows PC. FastMask – Fastmail Masks is free Productivity app, developed by Paweł Orzech. Latest version of FastMask – Fastmail Masks is 1.10.2, was released on 2026-08-04 (updated on 2026-08-04). Estimated number of the downloads is more than 10. Overall rating of FastMask – Fastmail Masks is 5,0. Generally most of the top apps on Android Store have rating of 4+. This app had been rated by 1 users, 1 users had rated it 5*, 0 users had rated it 1*.

How to install FastMask – Fastmail Masks on Windows?

Instruction on how to install FastMask – Fastmail Masks on Windows 10 Windows 11 PC & Laptop

In this post, I am going to show you how to install FastMask – Fastmail Masks on Windows PC by using Android App Player such as BlueStacks, LDPlayer, Nox, KOPlayer, ...

Before you start, you will need to download the APK/XAPK installer file, you can find download button on top of this page. Save it to easy-to-find location.

[Note] You can also download older versions of this app on bottom of this page.

Below you will find a detailed step-by-step guide, but I want to give you a fast overview of how it works. All you need is an emulator that will emulate an Android device on your Windows PC and then you can install applications and use it - you see you're playing it on Android, but this runs not on a smartphone or tablet, it runs on a PC.

If this doesn't work on your PC, or you cannot install, comment here and we will help you!

  1. Install using BlueStacks
  2. Install using NoxPlayer

Step By Step Guide To Install FastMask – Fastmail Masks using BlueStacks

  1. Download and Install BlueStacks at: https://www.bluestacks.com. The installation procedure is quite simple. After successful installation, open the Bluestacks emulator. It may take some time to load the Bluestacks app initially. Once it is opened, you should be able to see the Home screen of Bluestacks.
  2. Open the APK/XAPK file: Double-click the APK/XAPK file to launch BlueStacks and install the application. If your APK/XAPK file doesn't automatically open BlueStacks, right-click on it and select Open with... Browse to the BlueStacks. You can also drag-and-drop the APK/XAPK file onto the BlueStacks home screen
  3. Once installed, click "FastMask – Fastmail Masks" icon on the home screen to start using, it'll work like a charm :D

[Note 1] For better performance and compatibility, choose BlueStacks 5 Nougat 64-bit read more

[Note 2] about Bluetooth: At the moment, support for Bluetooth is not available on BlueStacks. Hence, apps that require control of Bluetooth may not work on BlueStacks.

How to install FastMask – Fastmail Masks on Windows PC using NoxPlayer

  1. Download & Install NoxPlayer at: https://www.bignox.com. The installation is easy to carry out.
  2. Drag the APK/XAPK file to the NoxPlayer interface and drop it to install
  3. The installation process will take place quickly. After successful installation, you can find "FastMask – Fastmail Masks" on the home screen of NoxPlayer, just click to open it.

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Download older versions

Other versions available: 1.10.2.

Download FastMask – Fastmail Masks 1.10.2 on Windows PC – 1 MB

FastMask is a fast, private, native Android client for managing your Fastmail masked email addresses.

Masked emails are disposable forwarding addresses that protect your real inbox. Use a different one for every website, track who leaked your data, and switch off any address that gets abused — without giving up your real email anywhere.

FastMask brings the masked-email features that already exist on Fastmail's web app to your phone, in a calm, distraction-free interface designed for one thing: getting in, copying or creating an address, and getting back to whatever you were doing.

FEATURES
• View all your masks in a clean list, sorted by latest activity (not creation date)
• Create new masks with custom descriptions and domain associations
• Enable, disable, or archive masks without losing the address
• Edit description, domain, and forwarding URL
• One-tap copy to clipboard with subtle haptic feedback
• Search and filter by Active / Off / Archived
• Quick stats: how many messages each mask has received, when the last one arrived
• Settings screen with language picker, contact link, and logout

DESIGN
• Warm-ink palette — parchment cream and ink navy, not the usual blue
• Instrument Serif headings, Inter Tight body, JetBrains Mono for addresses
• Light and dark mode, both following your system setting
• Smooth shared-element transitions between list and detail
• Subtle, restrained motion — never in the way

PRIVACY & SECURITY
• Zero tracking. Zero analytics. Zero third-party SDKs.
• Your Fastmail API token is encrypted on-device using EncryptedSharedPreferences
• The app talks directly to api.fastmail.com over HTTPS — no servers in the middle
• Network Security Config pins trust to the system CA store
• Release builds log nothing about your network traffic
• Screens are FLAG_SECURE — the token never leaks to screenshots or screen recording
• Open source under MIT license — verify everything for yourself

LANGUAGES

Full UI translations: English, Polish, Spanish, German, French, Italian, Portuguese, Dutch, Russian, Ukrainian, Turkish, Arabic, Hindi, Bengali, Chinese (Simplified), Japanese, Korean, Vietnamese, Thai, Indonesian.

REQUIREMENTS
• Android 8.0 (API 26) or higher
• A Fastmail account with API token access (any paid plan)

To get started, create an API token in Fastmail Settings → Privacy & Security → Integrations → API tokens (scope: Masked Email, read/write), paste it into FastMask once, and you're in.

NOT AFFILIATED WITH FASTMAIL

FastMask is an unofficial, community-built client. It is not affiliated with or endorsed by Fastmail Pty Ltd. "Fastmail" is a trademark of Fastmail Pty Ltd, used here only to describe the service this app integrates with.

OPEN SOURCE

Source code, issue tracker, and release history:
https://github.com/pawelorzech/FastMask

Released under the MIT License. Pull requests welcome.
Fixes a crash that could stop FastMask from opening. On some devices the welcome screen closed the app instead of loading, because part of the app icon artwork was missing from the install. The icon now travels with every install, so the app starts normally.