Delta Chat
chat.delta
Zapstore _@zapstore.dev Republished from GitHub / F-Droid by the Zapstore main account.
Delta Chat is a reliable decentralized instant messenger that is easy and fun to use for friends, family, groups and organizations. Delta Chat is developed by a dedicated FOSS contributor community that jointly releases refinements and new features several times a year, across many stores and platforms world-wide. Features at a glance: • Anonymous. Instant on-boarding without a phone number, e-mail or other private data. • Flexible. Supports multiple chat profiles and is easy to setup on multiple devices. • Extensible. Add tools like shopping lists, calendars or gaming apps to any chat. • Reliable. Works under bad and adversarial network conditions. • Secure. Audited End-to-End encryption safe against network and server attacks. • Sovereign. Can be run with your own e-mail address or server. • FOSS. Fully Open Source/Free Software, built on Internet Standards. • Audio and video calls supported! stay close to family and friends even when traveling.
First release: Aug 14, 2025, 20 total releases.
Most recent release: Sep 26, 2026.
Appears in 6 app stacks.
0 sats / 0 zaps received in the past year.
Sats Received
Underlying data available via MCP: app_zaps, app_releases.
Zap Count
Underlying data available via MCP: app_zaps, app_releases.
Releases
- Sep 26, 2026 2.62.0* Improve resilience & decentralization: new users onboard by default in more than one relay, randomly selected, instead of using the hardcoded nine.testrun.org relay * Improve resilience: pick random relay for sending and try others if sending with one fails, no need for manually selecting a relay "used for sending" * Add speed button for voice message playback * Improve image quality of sent images * New language supported: Belarusian * Target Android 17 (SDK 37) * Allow to cancel sending video while it is re-encoding/compressing * Allow to open invitation links pasted in the search bar in "New Chat" screen * No more error sign for messages in group if the message was delivered to some of the members * Improve a11y on Conversation List
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* When a contact has not been seen for a long time, show a hint in the contact list, chat members list and 1:1 chat subtitle * Remove verification icon and "Introduced By" from profile. They are no longer needed (See [FAQ](https://delta.chat/en/help#e2eeguarantee)) * Fix: support scanning a channel-invite while creating a new profile * Fix: random long delay when reopening a WebXDC app * Fix: apply maximum file size limit to videos as is, without 5/4 factor, and enforce file size limit after encoding the video * Fix: don't notify about a reaction emoji sent by a blocked contact * Fix: don't notify missed call from blocked contact * Update translations and local help * Update to core 2.62.0 - Aug 24, 2026 2.59.1* Fix potential crashes under certain conditions when placing a call * Update translations
- Aug 21, 2026 2.59.0* Fix multi-device synchronization of read messages even if "Read Receipts" are disabled * Add self-updater for installations that are *not* installed from either Google Play or F-Droid * Update translations * Update to core 2.59.0
- Aug 13, 2026 2.58.0* Add support for reactions in channels * Improve reactions details overview * Allow channel owners to mute their channel * Fix: Mic will stay active during a call when screen is off on Android 14+ * Fix: allow to pick image without requiring storage permission * Fix: avoid overflow with big numbers in badge counters * Fix: make video players truly fullscreen * Fix: avoid ending search mode when a new message arrive to the chat * Fix: Recording now request and respect audio focus * Fix: If one relay is connected, assume overall connectivity
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* Show phased out relays in connectivity view as such * Sending relay is a per-device setting now * Collect call information from all relays * Reduce traffic (no unnecessary keys attached to group chats, improve read receipts) * Send messages to up to 5 relays * Update to core 2.58.0 - Jul 27, 2026 2.57.0* properly update message views counter for channel owner * Fix: Call now tries to reconnect when network changes instead of closing * Update to core 2.57.0
- Jul 22, 2026 2.56.0* Allow to select multiple files for sending * Add notifications for missed calls * Video call preview now accurately shows what is sent to remote * Enhance display of messages with long links * Show in title if an app is still in draft mode * Remove "hide relay" option * Add new experimental "Team Profile" mode in profile creation * Fix: don't send images pasted from clipboard as sticker * Fix: properly hide draft attachment during in-chat search * Fix: close mini-apps and chats if they are deleted
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* Fix: cancel in-chat search when back is pressed, instead of directly returning to chatlist * Fix: "go to bottom" floating button not appearing sometimes when user jumped to message * Fix: incoming call ringtone now respects user's notification channel sound setting instead of the system default * Fix: Calls now prioritize headset before earpiece * Fix: Calls now respect remote controls (Bluetooth, Auto, etc.) * Fix: Call now show a notification for missing mic permission when answered with remote controls * Fix: Allow fullscreen image preview on Android 15+ * Update to core 2.56.0 - Jun 17, 2026 2.53.0* Use message style notifications for longer message previews * Remove notification after audio playback ends * Fix: do not allow blocked contacts to use our invite links * Fix sending mini-app that was used/prepared before sending * Some more small fixes and updated translations * Update to core 2.53.0
- Jun 9, 2026 2.52.0* Fix: avoid crashes in Media preview sometimes * Fix: Incorrect total time when attaching audio files as draft * Fix: Audio files in draft showing total time from wrong file * Fix: Update the channel title after joining if the QR code had an outdated title * Voice recording will be automatically saved as draft when interrupted * Update to core 2.52.0
- Jun 5, 2026 2.51.0* Better incoming call system integration * Calls are not experimental anymore and don't need to be manually enabled * Calls can be answered by tapping messages * Notify the user when they try to make a call while the device is offline * Channels are no longer experimental and are available by default * Display a permanent notification when doing location streaming and get rid of dangerous "Access Location in Background" permission * Autoplay all voice messages in a chat * Allow to share location for 24 hours * Allow mini-apps to play audio without user interaction * Allow to paste and open invitation links from search
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* Mark chats as unread (long tap a chat and select the corresponding option from the three-dot-menu) * Add "Mark all as read" option to profile menu in the profile switcher * Fix process of upgrading from a very old version of the app * Show more recent added stickers at the top of the sticker picker * Allow to open links in messages via actions in TalkBack menu * Allow to open map if user clicks "Location streaming enabled" system message * Allow to disable incoming calls notifications * Add an option to process unencrypted messages; by default, only encrypted messages can be sent or received * Fix: do not accidentally set draft in chats that don't allow sending messages * Fix swipe navigation between tabs in RTL languages * Remove "Move to DeltaChat folder", in case you are using the option, a device message shows how to proceed * Remove "Only fetch from DeltaChat folder" option, the functionality is preserved for existing profiles * Remove "Delete Messages from Server" option, this is now up to the server: Chatmail handles that automatically, classic email servers used as relay often have lots of storage or options themselves * Remove "Show Email" options, all messages are shown by default, shared usage of email account is not supported * Allow otherwise invalid TLS connections if the key is unchanged * Adapt quota warning to automatic cleanup. * Don't show non-delivery-notfications in broadcast channels * Resend the last 10 messages to new broadcast channel member * Enable PQC (Post-Quantum Cryptography) support. We do not generate PQC keys yet, this step is needed for forward compatibility * Improve avatar quality * Add new webxdc.isAppSender and webxdc.isBroadcast APIs for mini-apps * Fix: avoid invalid empty "~" notifications when some peer is streaming location * Fix: Improve detection of stickers * Fix text direction issues for RTL languages in "Show full message" view * Fix: Reconnect when removing a relay * Fix: Location streaming now works correctly with multiple accounts * Fix debouncing in chatlist and search * Fix sharing contact across profiles * Fix: Reset scroll location after switching account * Update to core 2.51.0 - Apr 14, 2026 2.49.0* Fix file sharing to certain apps (e.g. Material Files, etc.) * Fix problem with calls when microphone permission is not granted * Fix taking pictures and videos in devices with SD cards * Fix flipped orientation for some images * Fix: avoid empty contact request chats when using invite links in a multi-device setup * Remove proxy toggle from profile editing to avoid confusion * Updated translations * Update to core 2.49.0
- Mar 31, 2026 2.48.0* Add a warning when editing relays * Fix message reordering problems in multi-relay setups * Some more bug fixes and updated translations * Update to core 2.48.0
- Mar 24, 2026 2.47.0* Allow to set chat description * Unified date display in call bubbles * Explain at "Settings / Chats / Outgoing Media Quality" how to send original quality * Add a basic sticker picker * Leave groups and channels before deletion * Further minimize metadata in messages and while getting in contact. * Increase resilience of multi-relay usage: if on relay goes down, messages are still received in the others. * Allow to hide a relay from contacts instead of removing, allowing smoother relay changes * HTML emails: allow to review and copy links before opening them * Mark call message as seen when accepting/declining a call
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* Fix: keep original sent timestamp for resent messages * Fix: make clicking on broadcast member-added messages work always * Fix: remove notification when a message is deleted by sender * Fix: avoid "reply privately" not quoting the selected message sometimes * Fix: properly hide the calls button * Some more bug fixes and updated translations * Update to core 2.47.0 - Feb 25, 2026 2.43.0* Improve switch speed when changing profiles * Allow to switch profile when sharing or forwarding * Display message views count for channel owners * Don't notify notification-to-all from in-chat apps if the chat is muted * Allow to see inbox quota for all relays in connectivity screen * Truncate file names in the middle, not at the end; important information are more often at the end * Remove email address from user profile * Mark external links with " ↗" to make them clear * Make QR code larger on "Add Second Device" screen * Add indication for blocked contacts in user profile
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* Allow to start calls with video disabled * Show hint for empty contact search results * Add background playing for voice messages and other audio files * Allow scanning Invitation Code when creating a new profile * Add context menu in long-pressing relays items instead of showing buttons * Enhanced video player UI * Fix: Show dialog if pasted QR codes are invalid * Fix: Refresh chat list when returning from conversation if selected profile changed * Fix: Update menu when using "select all" in contact selection * Fix: Avoid empty profiles after using "add as second device" from welcome screen * Fix: Remove from group deselected members in the contact selection list * Fix multi-device seen messages synchronization when using multiple relays * Fix mailto handling * Fix layout problems inside in-chat apps * Fix real-time for in-chat apps that need it * Avoid crash when the app is minimized with profile switcher or reactions dialogs open * Remove "trash icon" option from contact selection list when adding members to group * Update to core 2.43.0 - * Protect profile deletion and relays management with system lock/pin * Fix: Remove address from profile switcher * Fix: Avoid crash if the system doesn't allow to start foreground service * Remove deprecated "real-time apps" switch * Update to core 2.35.0
- * Protect profile deletion and relays management with system lock/pin * Fix: Remove address from profile switcher * Fix: Avoid crash if the system doesn't allow to start foreground service * Remove deprecated "real-time apps" switch * Update to core 2.35.0
- * Allow to add relay from clipboard or image if camera permission is not granted * Avoid crash in the "View Log" screen * Update to core 2.34.0
- * Target Android 16 * Change color of links in text messages * Improve edge-to-edge support * Metadata protection: protect message recipients * Allow to withdraw channel invite links and QR codes * Allow to open externally links clicked inside in-chat apps * Do not show "1 member" when the process of joining the group is not finished * Make search case-insensitive for non-ASCII chat and contact names * Improve handling of video recoding * Send .webm videos as file, they are not supported by all platforms
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* Tweak advanced section and wording of some advanced options * Fix: avoid crash in push notifications handling * Fix: avoid freezing in background * Fix: clean up web storage of deleted in-chat apps * Fix: avoid crash when exporting some files with wrong image MIME type * Expose new "Multi-device mode" option instead of "Delete from server" for chatmail profiles * Opened in-chat apps got a 'About Apps' menu item * Avoid gray avatar on profile creation * Avoid last item in chat list being covered by the floating button * Add disk usage statistics to log * New experimental feature: several addresses per profile * Update to core 2.33.0 - * Make it possible to invite members into a channel via a QR code, and make channels more secure * metadata protection: protect Date header * metadata protection: protect Autocrypt header * better multi-device: synchronize group creation across devices * data saving: do not send Autocrypt header in read receipts * improve onboarding speed * allow to save to storage files shared from inside in-chat apps * reduce app size * don't show badge counter in app icon for the permanent background notification
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* fix sorting of old media in gallery * fix text direction in "x members" subtitle for RTL languages * fix group invite QR screen's layout * tweak text hints in advanced classic e-mail configuration * remove deprecated "companion app" code * remove deprecated "Watch Sent Folder" preference * remove deprecated "send self-report" preference * don't show email address in shared vcard * update to core 2.25.0 - * target Android 15 * improve readability of info messages in dark mode * drop too short disappearing messages options * fix Direct Share shortcuts * fix: don't show error message when cancelling profile creation * enable permanent notification by default if push notifications are not available * hide "clone chat" and member list for incoming channels * show warning if background notifications will be unreliable * warn if the app has not been updated after 6 months instead of 1 year * avoid "unknown sender for this chat" error
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* properly display "Messages are end-to-end encrypted." in all encrypted groups * show dialog if user has permanently denied camera permission and tries to take picture for group avatar * several small fixes and improvements * add experimental built-in calls * update to core 2.22.0 - * add "After 1 year" option to disappearing messages * improve image quality when setting group avatars * add Estonian translation, update other translations * allow to clone email chats * fix some small bugs * update to core 2.11.0