Release History
0.23.5
Release Date: 2026-08-07
Bug Fixes
- Fixed Excel data status calculation: when multiple rows share the same inbox, the status was incorrectly calculated using unique inbox count instead of row count, resulting in more accurate status determination
- Improved inbox data validation: properly handles whitespace-only inbox values for more accurate validation logic
- Improved error messaging: validation failures now display specific Excel row numbers missing inbox data, helping users quickly locate issues
- Improved duplicate recipient error guidance: directs users to the "Allow Duplicate Sending" feature to resolve duplicate recipient issues
Downloads
uzonmail-desktop-win-x64-0.23.5.0.zip
uzonmail-service-win-x64-0.23.5.0.zip
uzonmail-service-linux-x64-0.23.5.0.zip
0.23.4
Release Date: 2026-08-07
Bug Fixes
- Fixed inbox status calculation: previously ExcelDataStatus.All required every row to have an inbox, but the calculation incorrectly used unique inbox count instead of row count. This has been corrected.
- Improved inbox data validation: now properly trims whitespace and uses IsNullOrWhiteSpace for empty value checks.
Improvements
- Added row-level error reporting in SendingGroupValidator to display specific Excel row numbers that are missing inbox data.
- Improved duplicate recipient error message to guide users toward the "Allow Duplicate Sending" setting.
Downloads
uzonmail-desktop-win-x64-0.23.4.0.zip
uzonmail-service-win-x64-0.23.4.0.zip
uzonmail-service-linux-x64-0.23.4.0.zip
0.23.3
Release Date: 2026-08-04
New Features
- Enhanced version update notification: Interactive notification with View History, Ignore, and Update actions
- New Version History dialog: Displays official release notes with safe download links
Improvements
- Email address validation upgraded: Adopts strict MIME compliance mode for sender, recipients, CC, BCC, and reply-to address validation
Downloads
uzonmail-desktop-win-x64-0.23.3.0.zip
uzonmail-service-win-x64-0.23.3.0.zip
uzonmail-service-linux-x64-0.23.3.0.zip
0.23.2
Release Date: 2026-07-31
Improvements
- Add HTML-to-plaintext conversion for emails, generating a plain-text alternative alongside the HTML body to prevent MPART_ALT_DIFF mismatches in email clients
Bug Fixes
- Optimize email template caching with a per-template lease-based approach, improving reliability and timely resource release
Downloads
uzonmail-desktop-win-x64-0.23.2.0.zip
uzonmail-service-win-x64-0.23.2.0.zip
uzonmail-service-linux-x64-0.23.2.0.zip
0.23.1
Release Date: 2026-07-30
New Features
- Runtime theme switching: support switching between default theme and Cherry Blossom Romance theme
- Desktop application localization: complete localization infrastructure for Windows desktop app with bidirectional Chinese/English sync
- Organization-level inbox validity management: batch mark inboxes as valid or invalid across organization users
- Batch move email boxes: support batch moving inboxes and outboxes to target groups
- Batch soft-delete selected inboxes: multi-select soft delete with validation status display in table
- Desktop application auto-updater: CLI tooling and WebView2 integrated automatic update capability
- Hard bounce detection and inbox verification system: SMTP status codes 550/551/553 automatically identified as hard bounces
- API error localization: key-based API error localization system
- Allow duplicate sending: support sending multiple emails to same recipient in single task with duplicate detection
- DraggableTree component: hierarchical data with drag-and-drop, context menus, and controlled tree state
- File storage redesign: categories, content-addressable storage, and reference counting
- Desktop app refactoring: migrated to new location with CommunityToolkit.Mvvm framework
Improvements
- Theme renamed from Fairy Pink to Cherry Blossom Romance
- Inbox manager template formatting cleanup, invalid import button added red visual indicator
- Plugin loading supports shared assembly directory
- Unified build scripts, exclude hard bounce items from sending queries
- i18n extended to all UI pages and components
- Context menu visibility conditions based on selection count
- WYSIWYG editor support for lowCode forms
- Status labels resolved through i18n system
Bug Fixes
- Fix WSL path conversion with proper Bash quoting
- Fix email verification order and add SPF/unknown-state tests
- Fix property name disableAutogrow to disableAutoGrow
- Fix SendCore bugs and improve async lifecycle handling
Downloads
uzonmail-desktop-win-x64-0.23.1.0.zip
uzonmail-service-win-x64-0.23.1.0.zip
uzonmail-service-linux-x64-0.23.1.0.zip
0.23.0
Release Date: 2026-07-28
New Features
- Desktop application auto-updater: New UzonMailUpdater CLI tool with package/update commands for version checking, ZIP download, file hash validation, and rollback support. Desktop app integrates WebView2 update entry, superadmins can check and apply updates from dashboard.
- Batch move email boxes to target group: Support batch selecting and moving inboxes/outboxes to specified groups from management pages.
- Batch soft-delete for selected inboxes: Support batch soft-deleting selected inboxes with validation status displayed in table.
- Hard bounce detection and inbox verification: Auto-detect SMTP 550/551/553 as hard bounces during sending, mark target inbox as invalid and move to "validation failed" group. Support verifying individual inbox or entire group.
- Allow duplicate sending option: New sending task setting to allow sending to same recipient multiple times, with warning dialog showing duplicates when detected.
- API localization infrastructure: New key-based API error localization system with localized error messages for Chinese and English.
Improvements
- Full UI internationalization: Added and improved translations for crawlerTask, sendDetail, sendHistory, sendingProgress, statisticsReport, profile and other pages.
- SendCore scheduling optimization: Non-blocking cooldown with lazy daily quota reset to avoid blocking worker slots. Cursor-based pagination for outbox loading with adaptive catalog replenishment.
- DraggableTree component: New reusable component supporting hierarchical data with drag-and-drop and context menus.
- Context menu visibility conditions: Control menu item visibility based on selection count (any/onlyMulti/onlySingle).
- Strengthened TypeScript typing: useQTable and ContextMenu with generic type parameters and multi-select v-model for better type safety and batch operations.
- File storage redesign: Introduced file categories with tree structure, content-addressable storage, and reference counting for safe cleanup.
- Plugin loading optimization: Support loading shared dependencies from parent-level Assembly directory, sort plugins by dependency order.
Bug Fixes
- Fix WSL path conversion with proper Bash quoting for Windows paths with backslashes.
- Rename disableAutogrow to disableAutoGrow for consistency across LowCodeForm property naming.
Downloads
uzonmail-desktop-win-x64-0.23.0.0.zip
uzonmail-service-win-x64-0.23.0.0.zip
uzonmail-service-linux-x64-0.23.0.0.zip
0.22.1
Release Date: 2026-06-03
Improvements
- Simplified Docker installation and supported overriding backend configuration through environment variables
Bug Fixes
- Fixed an issue where the daily sending limit reset incorrectly
Downloads
uzonmail-desktop-win-x64-0.22.1.0.zip
uzonmail-service-win-x64-0.22.1.0.zip
uzonmail-service-linux-x64-0.22.1.0.zip
0.22.0
Release Date: 2026-03-29
Function Optimization
- Optimize login screen animation
Bug Fixes
- Fix bug where email still displays after deleting email group
Downloads
uzonmail-desktop-win-x64-0.22.0.0.zip
uzonmail-service-win-x64-0.22.0.0.zip
uzonmail-service-linux-x64-0.22.0.0.zip
0.22.0
Release Date: 2026-03-29
Features Optimization
- Optimize login interface animations
Bug Fixes
- Fix the bug where emails still display after deleting email groups
Downloads
uzonmail-desktop-win-x64-0.22.0.0.zip
uzonmail-service-win-x64-0.22.0.0.zip
uzonmail-service-linux-x64-0.22.0.0.zip
0.21.0
Release Date: 2026-03-22
Performance Improvements
- Optimized performance usage
- Upgraded the framework to .NET 10
Bug Fixes
- Fixed AI not working on Windows
Downloads
uzonmail-desktop-win-x64-0.21.0.0.zip
uzonmail-service-win-x64-0.21.0.0.zip
uzonmail-service-linux-x64-0.21.0.0.zip
0.20.6
Release Date:2026-01-27
Improvements
- Update UzonMail icon
Bug Fixes
- Fix custom domain Outlook sending failure issue
Downloads
uzonmail-desktop-win-x64-0.20.6.0.zip
uzonmail-service-win-x64-0.20.6.0.zip
uzonmail-service-linux-x64-0.20.6.0.zip
0.20.5
Release Date:2025-12-19
Improvements
- Split database upgrade module initialization and upgrade to reduce coupling.
- Use outbox history to assist SMTP information completion.
- Correct the status of sending tasks that exit due to outbox issues to "paused".
Downloads
uzonmail-desktop-win-x64-0.20.5.0.zip
uzonmail-service-win-x64-0.20.5.0.zip
uzonmail-service-linux-x64-0.20.5.0.zip
0.20.4
Release Date: 2025-12-19
Improvements
- Split MsGraph from SMTP; MsGraph sending authorization no longer depends on domain suffix detection.
Downloads
uzonmail-desktop-win-x64-0.20.4.0.zip
uzonmail-service-win-x64-0.20.4.0.zip
uzonmail-service-linux-x64-0.20.4.0.zip
0.20.3
Release Date: 2025-12-11
Bug Fixes
- Fixed an issue where multilingual @ configuration errors caused download functionality in mailbox management to fail.
Downloads
uzonmail-desktop-win-x64-0.20.3.0.zip
uzonmail-service-win-x64-0.20.3.0.zip
uzonmail-service-linux-x64-0.20.3.0.zip
0.20.2
Release Date: 2025-12-10
Improvements
- Optimized status label styling to reduce visual prominence.
- Improved backend memory management to release unused memory timely and increase runtime stability.
Bug Fixes
- Fixed a bug where pausing caused incorrect mail status and prevented resuming sending.
- Fixed a bug where the frontend did not respond properly after an outbox error.
Downloads
uzonmail-desktop-win-x64-0.20.2.0.zip
uzonmail-service-win-x64-0.20.2.0.zip
uzonmail-service-linux-x64-0.20.2.0.zip
0.20.1
Release Date: 2025-12-10
Bug Fixes
- Fixed a bug that prevented creating groups due to database changes.
Downloads
uzonmail-desktop-win-x64-0.20.1.0.zip
uzonmail-service-win-x64-0.20.1.0.zip
uzonmail-service-linux-x64-0.20.1.0.zip
0.20
Release Date: 2025-12-06
New Features
- Added QQ group member collection (Professional edition and above).
Downloads
uzonmail-desktop-win-x64-0.20.0.0.zip
uzonmail-service-win-x64-0.20.0.0.zip
uzonmail-service-linux-x64-0.20.0.0.zip
0.19.1
Release Date: 2025-12-06
Bug Fixes
- Fixed a concurrency issue where updating caches caused the outbox to exit under heavy concurrency.
Downloads
uzonmail-desktop-win-x64-0.19.1.0.zip
uzonmail-service-win-x64-0.19.1.0.zip
uzonmail-service-linux-x64-0.19.1.0.zip
0.19.0
Release Date: 2025-12-05
Warning
Because the password storage method was changed, direct upgrades are not supported. You may need to delete the database and restart. For the desktop client, delete the old directory.
Updates
- Added AI template generation and optimization features Docs - AI Assistant.
- Added AI-generated multiple subject lines based on content.
- Improved backend cache framework to increase cache efficiency.
Bug Fixes
- Fixed an issue where professional edition authorization might disappear after database deletion.
- Fixed an issue where variables in Excel data were not replaced.
Other
- Tested importing 70k inbox records; could not reproduce the reported stuttering.
Downloads
uzonmail-desktop-win-x64-0.19.0.0.zip
uzonmail-service-win-x64-0.19.0.0.zip
uzonmail-service-linux-x64-0.19.0.0.zip
0.18.2
Release Date: 2025-11-08
Warning
Due to many multilingual changes, upgrades are not recommended unless necessary.
Updates
- Home page, Outbox management and New Outbox pages support multiple languages.
- Added bulk deletion of inbox items that have already received mail.
Downloads
uzonmail-desktop-win-x64-0.18.2.0.zip
uzonmail-service-win-x64-0.18.2.0.zip
uzonmail-service-linux-x64-0.18.2.0.zip
0.18.1
Release Date: 2025-10-30
Bug Fixes
- Fixed a bug where "Copy Outbox" in send history was unresponsive.
- Fixed a bug where templates became invalid after selection.
Downloads
uzonmail-desktop-win-x64-0.18.1.0.zip
uzonmail-service-win-x64-0.18.1.0.zip
uzonmail-service-linux-x64-0.18.1.0.zip
0.18.0
Release Date: 2025-10-25
Improvements
- Enterprise edition added IP warming feature.
- Community edition adds the following default variables:
| outboxName | Recipient name |
- Improved randomness uniformity for sending intervals.
- Added bulk deletion of send history.
Downloads
uzonmail-desktop-win-x64-0.18.0.0.zip
uzonmail-service-win-x64-0.18.0.0.zip
uzonmail-service-linux-x64-0.18.0.0.zip
0.17.1
Release Date: 2025-09-18
Bug Fixes
- Fixed an issue where some devices couldn't select files.
- Fixed a database concurrency issue during bulk validation.
- Fixed incorrect retrieval of recipient variable names.
- Fixed a bug where preview wasn't available when only a recipient group was selected.
Downloads
uzonmail-desktop-win-x64-0.17.1.0.zip
uzonmail-service-win-x64-0.17.1.0.zip
uzonmail-service-linux-x64-0.17.1.0.zip
0.17.0
Release Date: 2025-09-10
Improvements
- Optimized the sending core to increase sending rate.
- Added per-IP per-domain hourly sending limits to prevent IP blocking during high concurrency.
- Dynamic variables now include Outbox, Inbox, Inboxes and other process data.
Downloads
uzonmail-desktop-win-x64-0.17.0.0.zip
uzonmail-service-win-x64-0.17.0.0.zip
uzonmail-service-linux-x64-0.17.0.0.zip
0.16.4
Release Date: 2025-09-04
Bug Fixes
- Fixed an issue where enterprise settings retrieval caused the application to crash.
- Fixed an issue where scheduled task optimizations were not merged into updates.
Downloads
uzonmail-desktop-win-x64-0.16.4.0.zip
uzonmail-service-win-x64-0.16.4.0.zip
uzonmail-service-linux-x64-0.16.4.0.zip
0.16.3
Release Date: 2025-09-01
New Features
- Support for sending via Outlook using a proxy (effective when SMTP address is not smtp.outlook.com).
Bug Fixes
- Fixed scheduled tasks still executing after cancellation.
- Fixed scheduled tasks marked as completed after restart.
Downloads
uzonmail-desktop-win-x64-0.16.3.0.zip
uzonmail-service-win-x64-0.16.3.0.zip
uzonmail-service-linux-x64-0.16.3.0.zip
0.16.2
Release Date: 2025-08-25
Bug Fixes
- Fixed timezone issues in scheduled tasks that caused actual send times to be inaccurate.
- Fixed JS variable parsing issues.
Downloads
uzonmail-desktop-win-x64-0.16.2.0.zip
uzonmail-service-win-x64-0.16.2.0.zip
uzonmail-service-linux-x64-0.16.2.0.zip
0.16.1
Release Date: 2025-08-16
New Features
- Enhanced template and editor: drag-and-drop image support, tables, and advanced image editing.
Bug Fixes
- Fixed a bug preventing saving when copying raw HTML into a template.
- Fixed inconsistent server vs UI time display.
Downloads
uzonmail-desktop-win-x64-0.16.1.0.zip
uzonmail-service-win-x64-0.16.1.0.zip
uzonmail-service-linux-x64-0.16.1.0.zip
0.16.0
Release Date: 2025-08-01
New Features
- Added PostgreSQL support.
- Improved variable parsing performance.
Bug Fixes
- Fixed a crash caused by variable parsing errors after line breaks.
Downloads
uzonmail-desktop-win-x64-0.16.0.0.zip
uzonmail-service-win-x64-0.16.0.0.zip
uzonmail-service-linux-x64-0.16.0.0.zip
0.15.3
Release Date: 2025-07-04
New Features
- Desktop client now restricts to a single instance.
- Added "Unsent" filter in send details.
Bug Fixes
- Fixed background process not closing after desktop client exit.
- Fixed incorrect category filter data in send details.
Downloads
uzonmail-desktop-win-x64-0.15.3.0.zip
uzonmail-service-win-x64-0.15.3.0.zip
uzonmail-service-linux-x64-0.15.3.0.zip
0.15.2
Release Date: 2025-07-03
Bug Fixes
- Fixed Outlook verification failure after entering username/password.
- Fixed Hotmail failing to match Graph sending.
Downloads
uzonmail-desktop-win-x64-0.15.2.0.zip
uzonmail-service-win-x64-0.15.2.0.zip
uzonmail-service-linux-x64-0.15.2.0.zip
0.15.1
Release Date: 2025-06-28
New Features
- Support configuring Outlook ClientId for unified authorization; add
MicrosoftEntraAppto backendappsettings.Production.jsonas described in the original Chinese docs. - Improved bulk upload logic for outbox and inbox to continue on invalid email formats.
Bug Fixes
- Fixed missing mail tracking data saves.
Downloads
uzonmail-desktop-win-x64-0.15.1.0.zip
uzonmail-service-win-x64-0.15.1.0.zip
uzonmail-service-linux-x64-0.15.1.0.zip
0.15.0
Release Date: 2025-06-21
New Features
- Support Outlook sending via refresh_token. Put
client_idin the username field and the token in the password field. - Enterprise edition adds API management features.
- Moved frontend configuration to backend. Add
BaseUrlinappsettings.Production.jsonto fixbaseUrlinapp.config.jsonif needed.
Bug Fixes
- Fixed an issue where frontend couldn't validate
.well-knownwhen applying for SSL certificates.