Email Book
v21.1.0 · 15.3 MB · code 21
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File information
UpdatedSep 17, 2025
PublishedOct 7, 2020
Packageappinventor.ai_bhagattv.EmailBook
Versionv21.1.0 (21)
Size15.3 MB
MD56d5cf3bad88e02c648f82b7d85bde771
Min SDK7
Malware scanTRUSTED
Signature SHA1EF:FC:BA:BC:24:B2:A6:5B:D1:7B:7A:EE:81:E1:C7:E0:C8:5A:F5:D4
Signer[email protected], O=AppInventor for Android, C=US
Total downloads1,000
This version1,000
Developer[email protected]
Age ratingEveryone
What's new in v21.1.0
New Features and New Design, Minor Changes
Security scan
TRUSTED
- Developer signature verified 2021-11-06
- Signature SHA1 EF:FC:BA:BC:24:B2:A6:5B:D1:7B:7A:EE:81:E1:C7:E0:C8:5A:F5:D4
- File MD5 6d5cf3bad88e02c648f82b7d85bde771
How to install Email Book v21.1.0 on Android API 7+
Takes about 2 minutes. You'll need roughly 15.3 MB of free storage.
- Grab appinventor.ai_bhagattv.EmailBook_21.apk — hit the Download button above (15.3 MB). If your browser warns about APK files, choose Keep or Download anyway — that warning fires on every APK, not just this one.
- Trust your browser to install — on Android 8+ go to Settings → Apps → Special access → Install unknown apps, pick the app you downloaded with (Chrome, Firefox, Files, etc.), and flip Allow from this source. On older Android, toggle Unknown sources under Security.
- (Optional) Verify the file — compute the MD5 of the downloaded APK and make sure it matches 6d5cf3bad88e02c6…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find appinventor.ai_bhagattv.EmailBook_21.apk in your Files app under Downloads, then tap it. Android's package installer will appear.
- Check the signer — the install screen will name the publisher. For this build it should read [email protected], O=AppInventor for Android, C=US. If it doesn't match, cancel — you have the wrong file.
- Review permissions & tap Install — scroll the permission list, then confirm. If Play Protect flags it, tap Install anyway (this APK was scanned as TRUSTED).
- Done — open Email Book — tap Open on the install screen, or find the Email Book icon in your app drawer.
Common install errors for Email Book
- "App not installed" — usually means an older or differently-signed version is already on your device. Uninstall it first, then retry. Your data may be lost unless you back it up.
- "Parse error" — the APK is for a newer Android than yours. This version needs Android API 7 or later. Pick an older build from the versions list below.
- "There was a problem parsing the package" — the download was interrupted. Delete the file and re-download over Wi-Fi.