ProtonMail - Encrypted Email
v1.13.39 · 22.9 MB · code 786
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File information
UpdatedNov 13, 2025
PublishedFeb 3, 2021
Packagech.protonmail.android
Versionv1.13.39 (786)
Size22.9 MB
MD5eef3e305620febe00368d306b93ccf66
Min SDK21
ABIsx86, x86-64, armeabi-v7a, arm64-v8a
Malware scanTRUSTED
Signature SHA1D8:E1:EE:3F:F3:A7:F6:EC:46:88:3C:89:80:32:FE:03:C2:3E:EC:20
SignerCN=Proton Technologies AG, OU=Proton Technologies AG, O=Proton Technologies AG, L=Geneva, ST=Geneva, C=CH
Total downloads10,000,000
This version10,000,000
DeveloperProtonMail
Age ratingEveryone
What's new in v1.13.39
* Minor improvements
Security scan
TRUSTED
- Developer signature verified 2025-11-13
- Signature SHA1 D8:E1:EE:3F:F3:A7:F6:EC:46:88:3C:89:80:32:FE:03:C2:3E:EC:20
- File MD5 eef3e305620febe00368d306b93ccf66
How to install ProtonMail - Encrypted Email v1.13.39 on Android 5.0 Lollipop+
Takes about 2 minutes. You'll need roughly 22.9 MB of free storage.
- Grab ch.protonmail.android_786.apk — hit the Download button above (22.9 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 eef3e305620febe0…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find ch.protonmail.android_786.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 CN=Proton Technologies AG, OU=Proton Technologies AG, O=Proton Technologies AG, L=Geneva, ST=Geneva, C=CH. 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 ProtonMail - Encrypted Email — tap Open on the install screen, or find the ProtonMail - Encrypted Email icon in your app drawer (this build targets x86/x86-64/armeabi-v7a/arm64-v8a devices).
Common install errors for ProtonMail - Encrypted Email
- "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 5.0 Lollipop 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.