FlowCrypt Encrypted Email v1.6.3
APK · 41.9 MB · version code 163 · Android 10+ · uploaded Apr 16, 2025
- Same certificate as v1.6.5, which matches Google Play Details
Quick check before downloading
Answer this to unlock the download. It keeps automated downloaders away.
Compared with the latest version
The latest version is v1.6.5, uploaded Sep 2, 2026 — about 1 year after this one.
- Size: this file is 41.9 MB; the latest is 43.2 MB (1.4 MB larger).
- Both versions request the same permissions.
File information
- Version
- v1.6.3 (163)
- Uploaded
- Apr 16, 2025
- Size
- 41.9 MB
- Requires
- Android 10+ (API 29)
- CPU support
- Any (no native code)
- Screen
- Small screens and larger
- MD5
- e3925d7d85bd23ab91d9a5bae4cb9c10
- Signing certificate (SHA-1)
- 81:58:2B:27:E9:D2:DC:51:66:CB:43:75:45:E3:F0:33:00:0A:23:BD
- Signed by
- O=FlowCrypt Limited, ST=Hong Kong, C=HK
- File name
- com-flowcrypt-email-163-70451626-e3925d7d85bd23ab91d9a5bae4cb9c10.apk
- Package
- com.flowcrypt.email
- Downloads (all versions)
- 10K+
- Age rating
- PEGI 3 · Everyone
What's new in v1.6.3
- Migrated to the conversation view for Gmail API
- Improved displaying quotes
- Android 10 is the minimum supported version from now
- Internal improvements
Permissions (8)
This version requests 8 permissions, none of them sensitive.
- Foreground service special use android.permission.FOREGROUND_SERVICE_SPECIAL_USE
- Full network access android.permission.INTERNET
- Internal broadcast protection (app-defined) com.flowcrypt.email.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Run at startup android.permission.RECEIVE_BOOT_COMPLETED
- Run foreground services android.permission.FOREGROUND_SERVICE
- Show notifications android.permission.POST_NOTIFICATIONS
- View network connections android.permission.ACCESS_NETWORK_STATE
Security & authenticity
Security rating: Trusted
Signing certificate
- Certificate issued to “FlowCrypt Limited” This is the certificate of the Google Play version.
- Same certificate as v1.6.5, which matches Google Play v1.6.5 · v1.6.4 · v1.6.1
Store checks
- Developer signature verified Apr 16, 2025
- Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (3 other versions compared). AAPKs doesn't scan files itself.
How to install FlowCrypt Encrypted Email on Android 10+
You'll need about 83.7 MB of free space.
- Download the APK — tap Download APK above (41.9 MB). Chrome shows “File might be harmful” for every APK file; choose Download anyway only if you trust this file.
- Open the file — tap the download notification, or open Files › Downloads and tap com-flowcrypt-email-163-70451626-e3925d7d85bd23ab91d9a5bae4cb9c10.apk.
- Allow the install (first time only) — Android 8 and later asks for permission the first time an app opens an APK: tap Settings in the prompt, turn on Allow from this source, then go back. Manual path: Settings › Apps › Special app access › Install unknown apps (on Samsung: Settings › Apps › ⋮ › Special access). On Android 7 and older: Settings › Security › Unknown sources.
- Check the file (optional) — the MD5 of the downloaded file should be e3925d7d85bd23ab91d9a5bae4cb9c10. If it differs, the file is damaged or was changed: delete it and download again.
- Tap Install — Android asks “Do you want to install this app?”. If Google Play Protect shows a warning, read it before you continue: the source store rated this file Trusted, but only install apps from sources you trust. If an earlier version is installed, this one only installs as an update when it is signed with the same certificate (SHA-1 shown above).
- Open FlowCrypt Encrypted Email — tap Open on the install screen, or find it in your app drawer.
Common install problems
- “App not installed” — a version signed with a different certificate, or a newer version, is already installed (Android doesn't allow downgrades). Uninstall it first; back up your data, because uninstalling deletes it.
- “There was a problem parsing the package” — the file is incomplete, or your Android is too old (this version needs Android 10+). Download it again, or pick an older version.
- Blocked by Play Protect — Play Protect checks apps from outside the Play Store. Only continue if you trust the source.