The Fastmail mobile app

The official Fastmail mobile app is the best way to use Fastmail on your iPhone, iPad, iPod or Android device.

Download on the App Store Get Fastmail on Google Play

The app works on iOS 10.x+ and Android 5.x+ devices. Your device must be online to access your information. Users who don't meet these requirements can still use the web interface, fully compatible with mobile browsers, at


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Except where noted, these are present on all platforms.

Alerts on shared calendar events don't show event preview text

Calendar alerts don't work if offline

No dark mode theme

No offline support yet

Android: notifications don't work without Google Play Services

Keep an eye on the Fastmail blog and our app store pages to learn about updates as we release them.

3 screenshots of the mail view on iOS showing a list of mail and the navigation bar on the bottom
screenshot of the notification settings available on the app
screenshot of the monthly calendar view on Android tablet showing layout of events throughout a month