New in version 0.6.193
What's new:
- Your inbox opens faster when you start the app.
- Encrypted messages open faster after the first one.
- Contact photos you saved appear as sender avatars.
Fixed:
- New messages and replies leave one blank line between your text and your signature.
Aster Mail is a private, encrypted email app for astermail.org accounts.
Your messages are encrypted on your device before they leave it. The server stores ciphertext and nothing else, so nobody at Aster can read your mail, scan it, or sell what is in it. There are no ads, no trackers, and no analytics anywhere in the app.
Private by design
- End-to-end encryption between Aster users, using a post-quantum ratchet protocol
- Zero-access architecture: the server holds only encrypted content
- No ads, no tracking, no telemetry, no profiling
- Open source under AGPL-3.0, so anyone can audit what the app does
Email aliases
- Create an alias for each site you sign up for, and turn one off when it starts getting spam
- See which alias a message arrived on, right in the message list
- Import and export your aliases
Your own domain
- Send and receive on a custom domain, with DKIM signing handled for you
- Buy a domain from inside the app
Everyday mail
- Folders, labels, categories, and search across your whole mailbox
- Swipe actions and a toolbar you can customize
- Templates, signatures, scheduled send, and auto-forwarding
- Blocked senders, sender filters, and an allow list
- Encrypted offline storage, so your mail is there without a connection
Security
- Biometric lock
- Two-factor authentication and a recovery key
- Active session management, so you can sign out a device you no longer have
Notifications
- Private mode hides the sender and subject on your lock screen
- Quiet hours schedule when notifications arrive
- Per-folder muting
This F-Droid build contains no Firebase or Google Play Services dependencies. Push notifications are delivered through any UnifiedPush-compatible distributor, such as ntfy. Background polling takes over when no distributor is installed.
Aster Mail is free to use. Paid plans add storage, larger attachments, more aliases, and custom domains.
Source code: https://github.com/Aster-Privacy/Aster-Android
Anti-Features
This app has features you may not like. Learn more!
Versions
Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.
Download F-Droid
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arm64-v8a
armeabi-v7a
x86_64
This version requires Android 8.0 or newer.
It is built and signed by the original developer, and guaranteed to correspond to this source tarball.
Permissions
-
view network connections
Allows the app to view information about network connections such as which networks exist and are connected.
-
run foreground service
Allows the app to make use of foreground services.
-
run foreground service with the type "specialUse"
Allows the app to make use of foreground services with the type "specialUse"
-
have full network access
Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
-
show notifications
Allows the app to show notifications
-
read your contacts
Allows the app to read data about your contacts stored on your phone. Apps will also have access to the accounts on your phone that have created contacts. This may include accounts created by apps you have installed. This permission allows apps to save your contact data, and malicious apps may share contact data without your knowledge.
-
read the contents of your shared storage
Allows the app to read the contents of your shared storage.
-
run at startup
Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
-
ask to ignore battery optimizations
Allows an app to ask for permission to ignore battery optimizations for that app.
-
use biometric hardware
Allows the app to use biometric hardware for authentication
-
use fingerprint hardware
Allows the app to use fingerprint hardware for authentication
-
prevent phone from sleeping
Allows the app to prevent the phone from going to sleep.
-
modify or delete the contents of your shared storage
Allows the app to write the contents of your shared storage.
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org.astermail.android.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Download APK
21 MiB
PGP Signature
|
Build Log
New in version 0.6.192
What's new:
- You can sort folders A to Z and expand or collapse all of them at once.
- You can open password-protected PDFs and see Cc and Bcc in message details.
- You can choose the app language separately from your phone language.
Fixed:
- The app refreshes your session before it expires, so you stay signed in.
- When a message fails to send, the app tells you why.
- Images that you paste into a message send as attachments.
-
arm64-v8a
armeabi-v7a
x86_64
This version requires Android 8.0 or newer.
It is built and signed by the original developer, and guaranteed to correspond to this source tarball.
Permissions
-
view network connections
Allows the app to view information about network connections such as which networks exist and are connected.
-
run foreground service
Allows the app to make use of foreground services.
-
run foreground service with the type "specialUse"
Allows the app to make use of foreground services with the type "specialUse"
-
have full network access
Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
-
show notifications
Allows the app to show notifications
-
read your contacts
Allows the app to read data about your contacts stored on your phone. Apps will also have access to the accounts on your phone that have created contacts. This may include accounts created by apps you have installed. This permission allows apps to save your contact data, and malicious apps may share contact data without your knowledge.
-
read the contents of your shared storage
Allows the app to read the contents of your shared storage.
-
run at startup
Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
-
ask to ignore battery optimizations
Allows an app to ask for permission to ignore battery optimizations for that app.
-
use biometric hardware
Allows the app to use biometric hardware for authentication
-
use fingerprint hardware
Allows the app to use fingerprint hardware for authentication
-
prevent phone from sleeping
Allows the app to prevent the phone from going to sleep.
-
modify or delete the contents of your shared storage
Allows the app to write the contents of your shared storage.
-
org.astermail.android.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Download APK
21 MiB
PGP Signature
|
Build Log
New in version 0.6.191
What's new:
- If your account is suspended, the app tells you why and lets you appeal.
Fixed:
- Categories show their unread counts again in the menu.
- Sending a message with large attachments no longer freezes the screen.
- Your inbox and messages load faster and the app stays responsive.
- Messages you mark as read or unread keep that state instead of switching back.
-
arm64-v8a
armeabi-v7a
x86_64
This version requires Android 8.0 or newer.
It is built and signed by the original developer, and guaranteed to correspond to this source tarball.
Permissions
-
view network connections
Allows the app to view information about network connections such as which networks exist and are connected.
-
run foreground service
Allows the app to make use of foreground services.
-
run foreground service with the type "specialUse"
Allows the app to make use of foreground services with the type "specialUse"
-
have full network access
Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
-
show notifications
Allows the app to show notifications
-
read your contacts
Allows the app to read data about your contacts stored on your phone. Apps will also have access to the accounts on your phone that have created contacts. This may include accounts created by apps you have installed. This permission allows apps to save your contact data, and malicious apps may share contact data without your knowledge.
-
read the contents of your shared storage
Allows the app to read the contents of your shared storage.
-
run at startup
Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
-
ask to ignore battery optimizations
Allows an app to ask for permission to ignore battery optimizations for that app.
-
use biometric hardware
Allows the app to use biometric hardware for authentication
-
use fingerprint hardware
Allows the app to use fingerprint hardware for authentication
-
prevent phone from sleeping
Allows the app to prevent the phone from going to sleep.
-
modify or delete the contents of your shared storage
Allows the app to write the contents of your shared storage.
-
org.astermail.android.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Download APK
22 MiB
PGP Signature
|
Build Log
