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Secret Inbox

Secret Inbox

Your Masked Email for Fastmail

1 ratings
2 reviews
🔧 Utilities
💼 Business
Free

Details

  • Released
  • Updated
  • October 11, 2023
  • February 17, 2026

Features

Developer

Cleanbit, MB
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About

Create and manage unique masked email addresses for every online service. Protect your primary inbox from spam by blocking or deleting unwanted masked addresses. Offers quick creation, privacy management, and search capabilities.

✓Generate masked emails instantly
✓Block and delete spam addresses
✓Search Fastmail inbox by masked email
✓Lock Screen widget for quick access
✓Siri Shortcuts integration
✓Mac menu bar access
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What's New in Secret Inbox

1.5.0

February 17, 2026

• Added full multi-profile support so you can use and switch between multiple Fastmail accounts in Secret Inbox. • Added a new Manage Profiles flow where you can add, rename, switch, and remove profiles. • Added profile switching in the Safari extension popup so you can create and fill addresses from the correct account. • Added keyboard shortcuts for quick profile switching (⌘1 through ⌘9) plus a Profiles menu in the app. • Added profile-aware widget and App Shortcuts support so actions can run with a selected profile.

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User reviews

Most RecentHighest RatedLowest Rated

Fantastic App

If you use Fastmail masked emails, this app is a must-get. Makes creating and accessing masked emails easy. Frankly, without the app, accessing the feature is too difficult to be useful.

The biggest improvement is to make it easy to compensate the developer! Also, on iOS, add shortcut for creating with options, and, on all platforms, preference to set the “with options” creation the default behavior.

Thanks for the work.
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os4os4

Perfect

Perfect app for Fastmail’s Masked Email feature.
NeverJimNeverJim

Response from developer

Thanks!

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FAQ

Does Secret Inbox have ads?

No, Secret Inbox is completely ad-free, allowing for an uninterrupted user experience.

What devices does Secret Inbox support?

Secret Inbox is available for iPhone, iPad, and Mac devices, ensuring a consistent experience across Apple platforms.

Is Secret Inbox free to use?

Yes, Secret Inbox is free to download and use. It requires a Fastmail account with the masked email feature enabled.

How often is Secret Inbox updated?

The latest version of Secret Inbox is 1.5.0, last updated on February 17, 2026. Updates typically focus on performance improvements and new features.

What is the age rating for Secret Inbox?

Secret Inbox has an age rating of 4+, making it suitable for a wide range of users.

How does Secret Inbox protect user data?

Secret Inbox uses secure OAuth login directly with Fastmail, stores credentials in the device's keychain, and does not collect or track user data.

Can I search my emails with Secret Inbox?

Yes, you can tap any masked email within Secret Inbox to search your Fastmail inbox for messages sent to that specific address.

Does Secret Inbox offer offline functionality?

While the app itself requires an internet connection to manage Fastmail emails, features like Siri Shortcuts and Mac keyboard shortcuts allow for quick email creation without needing to fully open the app.