A notes and checklist app that synchronizes in your IMAP mailbox.
About this app
A free and fast notes editor for Android that allows for synchronization with IMAP servers.
General Attributes • compatible with various IMAP servers (Gmail, Yahoo, AOL, Posteo, and your server) • security options include plain text, SSL/TLS, or STARTTLS • save notes as standard HTML E-mails • manage multiple IMAP accounts and/or notepads • works offline (with background synchronization)
Feature-Rich HTML Editor • versatile text formatting • image integration • create checklists • full-text search • individual font and background colors
Additional Capabilities • no tracking or advertising • light and dark mode support • filter and organize your notes by #HashTags • note sharing with other apps (import/export) • backup notes as local zip archive • restore all or just a single note from a local archive All of these features are contained in this fully open source app, which has no tracking or advertising, and requires only minimal user permissions.
Licensed under GPL-3.0-only.
What's New in vv1.4-07
Imported from the F-Droid repository index.
- * build updates (libs, gradle etc.)
- * Weblate: add Ukrainian translation (thanks to Maxim Reznik)
- * Weblate: improve Spanish translation (thanks to z97febao)
- * Weblate: improve French translation (thanks to z97febao)
- * Swipe to refresh
Version history
Feb 3, 2026 · 6.3 MB · Android API 25–35 · code 10407
Imported from the F-Droid repository index.
- * build updates (libs, gradle etc.)
- * Weblate: add Ukrainian translation (thanks to Maxim Reznik)
- * Weblate: improve Spanish translation (thanks to z97febao)
- * Weblate: improve French translation (thanks to z97febao)
- * Swipe to refresh
SHA-256 86da9849485fe43ae82ac95218accbdc0826039b3e02586845fc5fc7855b74b8
Jun 19, 2025 · 5.9 MB · Android API 25–35 · code 10406
Imported from the F-Droid repository index.
- * build updates (libs, gradle etc.)
- * RichEditor 3.0.4 (fix for Android 16)
SHA-256 4ebd4f09fa96b641a406a12004a11f2f25fc17f5e94582ead2cf7952e4ebf1b6
May 6, 2025 · 5.9 MB · Android API 25–35 · code 10405
Imported from the F-Droid repository index.
- * build updates (libs, gradle etc.)
- * Weblate: translation updates (thanks to 77nnit)
- * layout fix: list start at top
- * fix crash when saving notes
- * App Store Description Enhancement (thanks to RightWrite)
- * improve logging
SHA-256 89a4682269595df6592ee4ceca42038c175c120ad41652120c1987d7a47c75a2
Will it run on your device?
78%
- Runs on a broad range of modern Android versions.
- ABI coverage is focused on newer 64-bit devices.
- Aligned with the latest Android target SDK expectations.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be de.niendo.ImapNotes3 is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, v1.4-06 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall ImapNotes3 first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of ImapNotes3, and a listing is removed when the evidence for it stops holding up.
Get ImapNotes3
Every source we list for de.niendo.ImapNotes3 is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
86da9849485fe43ae82ac95218accbdc0826039b3e02586845fc5fc7855b74b8
Signing certificate
efad1559e516914bc855fc6950fe2ab7ee2620a60d36977818dc9da152123461
Permissions Required
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
Report a problem with this listing
A listing is only as good as its corrections. If a source is broken, a signature looks wrong, or this app should not be here, tell the moderation team.