Delta Chat2.62.2 - App Store

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:

. Private. Instant on-boarding without a phone number or other private data.

. Friends & Family: Only chat with people you know. Unknown users cannot message or follow you without mutual consent.

. Flexible. Supports multiple chat profiles and is easy to setup on multiple devices.

. 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.

Version History - Onboard on multiple relays by default
- No need to mark a relay for sending, this is chosen by the core automatically
- Better image quality
- Show a hint about contacts not seen for a while
- Show coarse time when a contact was seen in the profile headers
- More reliable and quicker notifications and call ringing
- Update notification when its message is edited
- Remove notification if its message is deleted
- Improved share sheet reliability
- Remove a relay immediately instead of unpublishing it
- Carry all relays in invite links for better connectivity
- Respect "media quality" when sending videos
- Verification line is no longer needed, all contacts have that mean and are e2ee by default since V2
- Improve fetching messages in background
- Better file preview when drafting a message
- Fix: Do not load webxdc icon if it has too large dimensions
- Fix: No longer send read receipts when call window is covering messages
- Fix removing quotes or attachments from drafts pre-liquid-glass

These features will roll out over the coming days. Thanks for using Delta Chat! 2.62.2 Sep 30 - Allow to react in channels
- Allow scanning Invitation Code when creating a new profile
- Offer five default reactions when long-tapping a message
- 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 unncessary keys attached to group chats, improve read receipts)
- Send messages to up to 5 relays 2.59.1 Aug 31 - Prefer adding relay over adding profiles when scanning QR code
- Share attachments of multiple selected messages at once
- Fix chat edge contrast when iOS changes the status bar color
- Fix: Category labels in emoji picker not rendering correctly on iOS 26
- Fix: Incorrect content inset when "Share to x" alert is presented when sharing to Delta Chat
- Fix sometimes unaligned chat subtitle
- Fix onboarding page buttons
- Fix status bar edge effect contrast
- Fix stickers
- Fix layout glitches in iOS 15
- Add Hebrew language, update translations and local help

These features will roll out over the coming days. Thanks for using Delta Chat! 2.57.1 Aug 7 - Fix relays not synced properly between recent versions

from 2.56.0:
- Show notifications when app is in foreground and the respective chat is not on screen
- Allow voice and audio messages to continue playing in the background
- Add "laughing face" to quick reaction emoji
- Support LiquidGlass UI language on systems that support that

These features will roll out over the coming days. Thanks for using Delta Chat! 2.57.0 Jul 28 - Show notifications when app is in foreground and the respective chat is not on screen
- Allow voice and audio messages to continue playing in the background
- Support LiquidGlass UI language on systems that support that
- Bug Fixes

These features will roll out over the coming days. Thanks for using Delta Chat! 2.56.0 Jul 25 - "Calls" and "Channels" are available by default and are no longer experimental
- Add outgoing ringing sound and call status
- Resend the last 10 messages to new broadcast channel member
- Consistent outgoing image quality between images with different aspect ratio
- Enable PQC (Post-Quantum Cryptography) support. We do not generate PQC keys yet, this step is needed for forward compatibility
- Add "Mark All as Read" to the profile switcher context menu
- Improve avatar quality
- Simplified classic provider handling
- Add an option to process unencrypted messages to "Advanced / Relays / Edit / More Options". By default, only encrypted messages can be sent or received
- Show full message screen now uses the system font
- Click on location streaming info message to open the map
- Ignore blocked contacts attempting scanning your QR code
- Fix: Update the channel title after joining if the QR code included a wrong title
- Fix: Don't send removal message to contact that hasn't been a chat member
- Fix: Reactions could go to the wrong message if a new message was received while long pressing
- Fix: update relay list when modified on other devices
- Fix: Tapping "Me" in reactions overview would open the wrong contact on anything other than your first profile
- Fix: Video and PDF thumbnails are now cached for smoother scrolling
- Fix: Do not abort IMAP connection if setting the push token fails

These features will roll out over the coming days. Thanks for using Delta Chat! 2.53.0 Jun 17 - "Calls" and "Channels" are available by default and are no longer experimental
- 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
- Add "Mark All as Read" to the profile switcher context menu
- Improve avatar quality
- Simplified classic provider handling
- Add an option to process unencrypted messages to "Advanced / Relays / Edit / More Options". By default, only encrypted messages can be sent or received
- Show full message screen now uses the system font
- Click on location streaming info message to open the map
- Fix: Update the channel title after joining if the QR code included a wrong title
- Fix: Don't send removal message to contact that hasn't been a chat member
- Fix: Reactions could go to the wrong message if a new message was received while long pressing
- Fix: update relay list when modified on other devices

These features will roll out over the coming days. Thanks for using Delta Chat! 2.52.0 Jun 11 - "Calls" and "Channels" are available by default and are no longer experimental
- 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
- Add "Mark All as Read" to the profile switcher context menu
- Improve avatar quality
- Simplified classic provider handling
- Add an option to process unencrypted messages to "Advanced / Relays / Edit / More Options". By default, only encrypted messages can be sent or received
- Show full message screen now uses the system font
- Several bug fixes

These features will roll out over the coming days. Thanks for using Delta Chat! 2.51.1 Jun 8 Added an App Clip to handle an invite link in case the app wasn't installed yet. 2.49.2 Apr 29 This version is a pure bugfix release:
- When tapping an invite link, after app installation, offer corresponding chat
- Fix: do not crash when swiping keyboard down
- Fix: Mark a message as delivered only after it has been fully sent out
- Fix: Do not create 1:1 chat on second device when scanning a QR code
- Fix: Do not URL-encode proxy hostnames
- Fix: Let search also return hidden contacts if search value is an email address
- Fix: Make informational messages stick to the top of the chat
- Fix sometimes wrong detection of self-messages
- Fix sometimes wrong orientaton of images
- Fix: in-chat unread counter on the back button was not always updated after marking chats as unread
- Fix memory leak when opening chatlist and chat frequently
- Fix: Ignore messages about group name change from non-member

These features will roll out over the coming days. Thanks for using Delta Chat! 2.49.1 Apr 23 - Increase resilience of multi-relay usage: if on relay goes down, messages are still received in the others
- In the chat list, swipe a read chat to the right to mark it "unread"
- Allow to switch profile when sharing or forwarding
- Add group descriptions
- Leave groups and channels before deletion
- Support GIF stickers
- Increase reply swipe sensitivity
- Add tab bar icon bounce animation on tap
- Tons of bug fixes 2.48.0 Apr 2 - Faster preview and notifications of large messages
- Improve "Connectivity View"
- Truncate file names in the middle, not at the end; important information are more often at the end
- Experimental calls are now native
- Fix: Notifications are now removed when you open their respective chat on a different device
- Fix: No longer receive empty or ":" notifications when using experimental location sharing
- Fix: Improve QR codes handshake on special server configurations
- Fix: Fixed case where daymarkers could show the wrong date
- Fix: Online indicator in the chat navigation bar now updates correctly when returning from background
- Fix: Reset a previously removed setting that prevented adding new relays
- Fix: Do not upscale small images
- Fix: Restart I/O when there are new transports in a sync message
- Fix: Disable partial search by contact address, which results in apparently random results as address is not shown
- Fix: More reliable parsing of relay QR-codes and -links
- Fix: Prevent possible infinite loop with invalid SMTP row
- Fix: Sync broadcast subscribers list

These features will roll out over the coming days. Thanks for using Delta Chat! 2.43.0 Feb 26 - Scanning a QR code with a relay ask for adding it as additional transport
- Ask for device owner verification on profile deletion
- Better logging
- Simplify automatic deletion options
- Fix: Show input-bar after QR scan immediately
- Fix: Remove sometimes misleading "Please wait..." after QR code scan
- Fix: Do not set normalized name for existing chats and contacts; it takes too long sometimes
- Fix: Show relays in connectivity view by their hostname
- Fix: Synchronize default relay immediately after changing it
- Fix: Let securejoin succeed even if the chat was deleted in the meantime
- Fix: Ask before sharing via a direct-share link
- Fix: Show "Mark Read" icon on iOS 14/15
- Fix: Open chat after creating contact manually
- Fix: Add manually added contacts to member list
- Fix: Adding contacts manually is not possible for groups 2.35.0 Jan 19 - Handle additional relays
- Improved metadata protection
- Better multi-device: synchronize group creation across devices
- Improve onboarding speed
- Links in messages are now highlighted
- Improve navigation in offline help
- Lots of bug fixes

These features will roll out over the coming days. Thanks for using Delta Chat! 2.33.0 12/11/2025 - Disappearing messages options range from 5 minutes to 1 year now
- Share email address for email contacts instead of vCard
- In case of errors, tapping message text or status opens "message info" directly
- Flatten profile menu
- Show possible notification issues prominently in settings
- Show addresses for address contacts only
- Option to copy contact profile's "Encryption Info" to the clipboard
- User colors get a more consistent appearance
- Create user colors based on cryptographic identity instead of address
- Withdraw all QR codes when one QR code is withdrawn
- Support TLS 1.3 session resumption
- Fix avatar color in vcards
- Fix removing Exif data from corrupted images
- Fix: Make calendar files available as an attachment
- Fix transparency of larger stickers
- Fix: do not show letter icon for partially downloaded messages
- Fix: notifications now show up while the app is inactive in foreground (eg when in the app switcher)
- Fix group creation and verification issues

These features will roll out over the coming days. Thanks for using Delta Chat! 2.22.1 10/30/2025 - Allow to clone email chats
- Fix: Prevent the drag preview from showing upside down when long pressing reaction on an image
- Fix some small bugs
- Add Estonian translation

These features will roll out over the coming days. Thanks for using Delta Chat! 2.11.0 08/14/2025 - In Delta Chat, version 2.x, everything is encrypted by default - no locks or other symbols required.
- Version 2.x also comes with improved profiles

Recent changes in 2.10.0:
- Do not enlarge default icons as 'Saved Messages' or 'Device Chat'
- Show 'Saved Messages' icon in title
- When tapping an address, open existing encrypted chat, if any

These features will roll out over the coming days. Thanks for using Delta Chat! 2.10.0 08/07/2025 - Separate between unencrypted and encrypted chats, avoiding mixing of encrypted/unencrypted messages in the same chat
- Removed padlocks, as encrypted is the default "normal" state. Instead, unencrypted email is marked with a small letter icon
- Green checkmarks removed where they mostly refer to encryption, which is the default now. They are still used for profile's
"Introduced by"
- Classic email chats get a big letter icon making it easy to recognize
- Option to create a new email with subject and recipients
- Images with huge pixel sizes are sent as "Files"
- Indicate which message was scrolled to
- Easier recognizable date headlines
- Improve sorting "Saved Messages"
- Improve logging and error handling
- Lots of bug fixes 2.9.0 08/01/2025 - Separate between unencrypted and encrypted chats, avoiding mixing of encrypted/unencrypted messages in the same chat
- Removed padlocks, as encrypted is the default "normal" state. Instead, unencrypted email is marked with a small letter icon
- Green checkmarks removed where they mostly refer to encryption, which is the default now. They are still used for profile's "Introduced by"
- Classic email chats get a big letter icon making it easy to recognize
- Option to create a new email with subject and recipients
- Images with huge pixel sizes are sent as "Files"
- Indicate which message was scrolled to
- Easier recognizable date headlines
- Improve sorting "Saved Messages"
- Improve logging and error handling
- Lots of bug fixes 2.8.0 07/31/2025 - Access "Media" by an dedicated icon in chat's upper right corner
- "All Media" are available from the settings
- Speed up opening profiles
- Show "Disappearing Messages" state alrady in menu
- Fix sending voice messages if "Settings / Chats / Media Quality" is set to "Worse Quality"
- Fix: align avatar in groups to message
- Fix: return correct results when searching for a space
- Fix: show video recoding and similar errors in an alert
- Fix: video compression on iOS 16
- Fix: attaching GIFs and webP from gallery
- Fix: drag and drop videos on iOS 15
- Fix: attaching files on iOS 15

These features will roll out over the coming days. Thanks for using Delta Chat! 1.58.6 06/26/2025 - Fix notification sound
- Fix bitrate for "worse" outgoing media quality
- Save multiple selected messages in one go
- Improve voice message UI

These features will roll out over the coming days. Thanks for using Delta Chat! 1.58.5 05/21/2025 - Nicer profile, focusing on recognising contacts
- Fix adding chats from different profiles to widget
- Fix: Show errors if changing address fails
- Fix long tapping chats on iPad

These features will roll out over the coming days. Thanks for using Delta Chat! 1.58.4 05/17/2025 - Select and send multiple images at the same time
- Recode videos to reasonable quality and size
- Attach images and videos as original files
- Support pasted GIFs
- Notifications in Notification Center are grouped by chat
- More characters in notification before truncating
- Bug fixes

These features will roll out over the coming days. Thanks for using Delta Chat! 1.58.3 05/11/2025 - Modernise "Close" button in overlay sheets
- Full-screen display of own avatar from "your profile" settings
- Tapping info messages with contacts open the contact's profile
- Hide superfluous "Show Classic E-mails" advanced setting for chatmail
- Add a message with further information when securejoin times out (instead of allowing to send unencrypted)
- Forwarding messages do not inherit "Edited" state
- Data saving: do not send messages to the server if user is the only member of the chat in single-device usage
- Synchronize contact name changes across devices
- Hide address in primary settings screen, so it cannot be passed around without e2ee info
- Show self bio summary in primary settings screen
- Further metadata protection: encrypt message's sent date
- Bug Fixes

These features will roll out over the coming days. Thanks for using Delta Chat! 1.58.1 04/14/2025 - Edit your messages
- Delete your messages for everyone
- Search "Saved Messages" from title bar (it was available in profile before)
- Remove "Manage Keys" and "Import Autocrypt Setup Message"; use "Add Second Device"
- Allow better avatar (profile picture) quality
- Remove notifications from chat that was deleted from other device
- When a chat is deleted, also delete its messages from server
- Add mute option "8 hours"
- Improve deletion confirmation for "Device Messages"
- Fix decompression get stuck, leading to random errors sometimes
- Fix rare crash when switching server and server reports bad quota
- Fix names of explicitly attached files
- Fix hiding of "disappearing messages" icon in edit mode
- Fix rare crash when viewing avatars
- Fixed more minor bugs

These features will roll out over the coming days. Thanks for using Delta Chat! 1.54.5 03/16/2025