Aster Mail: Encrypted Email
Private email app with end-to-end encryption, aliases, and custom domains
新版本 1.0.14
What's new:
- Sent messages appear in the conversation right away, with undo.
- A banner warns you when storage is nearly full.
- Replies can edit the quoted text.
- Mail rules are in one place in Settings.
Fixed:
- Long messages, wide tables, and dark mode text display correctly.
- Scheduled sends in the past are blocked.
- Custom domain signatures match.
- Multiple accounts stay signed in.
- Faster compose, contacts, and inbox.
- Sent messages appear in the conversation right away, with undo.
- A banner warns you when storage is nearly full.
- Replies can edit the quoted text.
- Mail rules are in one place in Settings.
Fixed:
- Long messages, wide tables, and dark mode text display correctly.
- Scheduled sends in the past are blocked.
- Custom domain signatures match.
- Multiple accounts stay signed in.
- Faster compose, contacts, and inbox.
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
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
反特徵
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- 作者: Aster Communications Inc.
- 授權條款: GNU Affero General Public License v3.0 or later
- 網站
- 問題追蹤系統
- 原始碼
- 建置詮釋資料
- 可重現建置狀態
捐助
版本
雖然在下方可選擇下載 APK 檔案，但要留意這樣的安裝方式將不會收到更新通知，是一種較不安全的下載方法。建議您先安裝 F-Droid 用戶端使用。
下載 F-Droid-
arm64-v8aarmeabi-v7ax86_64此版本需要 Android 8.0 或更高的版本。
此套件包由原開發者建置和簽署，並保證與此原始碼 Tarball 保持一致。
-
arm64-v8aarmeabi-v7ax86_64此版本需要 Android 8.0 或更高的版本。
此套件包由原開發者建置和簽署，並保證與此原始碼 Tarball 保持一致。
-
arm64-v8aarmeabi-v7ax86_64此版本需要 Android 8.0 或更高的版本。
此套件包由原開發者建置和簽署，並保證與此原始碼 Tarball 保持一致。
新版本 1.0.13
This update improves how Aster Mail releases are built and verified. It has no visible changes.
新版本 1.0.11
Bug fixes and improvements:
- Aster Mail no longer stops in the background after you restart your phone.
- Upgrade screens show the correct plan limits.
- The schedule date picker offers only the next 28 days.
- Attachments in imported mail open as expected.
- A label's own chip is hidden when you view that label.
- Aster Mail no longer stops in the background after you restart your phone.
- Upgrade screens show the correct plan limits.
- The schedule date picker offers only the next 28 days.
- Attachments in imported mail open as expected.
- A label's own chip is hidden when you view that label.