Nine - Email & Calendar
v4.9.7b · 54.8 MB · code 1409720
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File information
UpdatedMar 20, 2026
PublishedJul 20, 2021
Packagecom.ninefolders.hd3
Versionv4.9.7b (1409720)
Size54.8 MB
MD5fb77371860403b0e61a4ed4ca8ee70fd
Min SDK24
ABIsx86, x86-64, armeabi-v7a, arm64-v8a
Malware scanTRUSTED
Signature SHA111:1B:A8:A4:EF:27:73:56:D6:14:95:CE:85:02:FC:31:60:5C:F9:40
SignerL=9Folders Inc.
Total downloads1,000,000
This version1,000,000
Developer9Folders Inc.
Age ratingEveryone
What's new in v4.9.7b
- Fixed sign-in failures for Outlook personal accounts (Outlook.com, Hotmail, Live) caused by Microsoft's deprecation of the user profile API.
Security scan
TRUSTED
- Developer signature verified 2026-03-20
- Signature SHA1 11:1B:A8:A4:EF:27:73:56:D6:14:95:CE:85:02:FC:31:60:5C:F9:40
- File MD5 fb77371860403b0e61a4ed4ca8ee70fd
How to install Nine - Email & Calendar v4.9.7b on Android 7.0 Nougat+
Takes about 2 minutes. You'll need roughly 54.8 MB of free storage.
- Grab com.ninefolders.hd3_1409720.apk — hit the Download button above (54.8 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 fb77371860403b0e…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.ninefolders.hd3_1409720.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 L=9Folders Inc.. 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 Nine - Email & Calendar — tap Open on the install screen, or find the Nine - Email & Calendar icon in your app drawer (this build targets x86/x86-64/armeabi-v7a/arm64-v8a devices).
Common install errors for Nine - Email & Calendar
- "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 7.0 Nougat 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.
- Works on one phone but not another — this build ships x86/x86-64/armeabi-v7a/arm64-v8a native code. Devices with a different CPU will reject it.