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  • Release 8.51
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  • Release 8.50
  • Release 8.49
  • Release 8.48
  • Release 8.47
  • Release 8.46

App Suite UI

8.51.1 - 2026-07-17

Added

  • Translation updates for cs_CZ, da_DK, de_DE, el_GR, en_GB, es_ES, es_MX, fi_FI, fr_CA, fr_FR, hu_HU, it_IT, ja_JP, lv_LV, nl_NL, pl_PL, pt_BR, ro_RO, ru_RU, sk_SK, sv_SE, tr_TR, zh_CN, zh_TW 0bc980e1e

Changed

  • Refresh the folder tree per account so large accounts don't freeze the UI (appsuite/support#1522)
    • Opening or refreshing a mail account with a very large number of folders (e.g. a shared account with 1000+ folders) no longer freezes the UI; the folder tree is now refreshed per account, in the background, in chunks
    • Folder actions (empty, restore, delete) now refresh only the affected account instead of reloading every account

Fixed

  • Antiphishing plugin doesn't work with 8.51 (support#1545)
  • Enable mail D&D (with app) icons also for Linux (support#1570)
  • Unsaved appointment draft not shown after reload (support-1547)
  • Unsubscribe feature displayed in "Whats New" dialog even when diasbled (support#1556)

8.51.0 - 2026-07-03

Added

  • As a user I can choose the address book when creating a contact 98f3ec277
    • The contact create dialog now has a "Save in" address book picker (private, public and shared books you can write to), so new contacts no longer always land in the default address book
  • As a user I can schedule sending at more times of day 0daba097e
    • Scheduled send now offers more quick options: afternoon (1 PM) and evening (6 PM), in addition to morning and Monday morning, listed in chronological order
    • Predefined options now send within a short time window instead of one sharp time, so messages are spread out; this can be configured or disabled (see configuration documentation)
    • Added a note clarifying that scheduled messages are queued and may be sent with a short delay, so recipients may not receive them at the exact chosen time
  • As a user I can see tasks in the calendar 861dca160
    • A new "Tasks" calendar shows your tasks that have a due date next to your appointments Turn it on under Settings > Calendar, then show or hide it like any other calendar
  • As a user I can set new appointments to private by default a16c596f2
    • Mark new appointments as "Private" by default
    • Setting can be found under Settings > Calendar > Advanced Settings
    • Applies only to your own (private) calendars
  • As a user I can vertically resize the all-day section in day and week views 661ae6ee7
    • A resize bar below the all-day area lets you drag it taller or shorter when you have many all-day appointments. Desktop only; the height is not persisted.
  • As a user I see BIMI logos by local-part selector (LPS)
    • BIMI now supports local-part selectors (LPS): a domain can show a different brand logo per sender local-part, e.g. support@example.org
    • Operators can preconfigure a logo for a specific local-part and allow individual addresses on otherwise blocked provider domains
  • As a user I would like to see the creator of shared or delegated tasks (AS-236)
    • Task details now show who created a task when it was created by someone else, for example in shared task lists or when a task was delegated to you
    • The creator's name also appears on task cards in the side panel
    • Select the creator's name to open their contact details
  • Categories for shared accounts (PBSR-1476)
  • Central management of designs for Signature Designer 7387348ce
    • Template rendering switched to Mustache
    • Ops can supply additional .html templates and a designs.yaml policy (visibility, ordering, custom fields, defaults, labels, per-template metadata) via the mail-assets ConfigMap
    • ConfigMap mounted via the mailAssets.configMapName helm value at /etc/mail-assets
    • See features/signature-designer for deployment and configuration details
  • Central management of email signatures and templates (AS-76)
    • Admins can configure read-only predefined email signatures and templates via signatures.yaml and templates.yaml in the mail-assets ConfigMap (mounted at /etc/mail-assets)
    • Predefined signature and templates appear above user signature/templates in settings and the compose dropdown with a Predefined badge; cannot be edited or deleted
    • Placeholders ({{ fullName }}, etc.) are rendered at insert time using the user's contact data
    • Requires feature flags:
      • io.ox/core//features/managedTemplates: true
      • io.ox/core//features/managedSignatures: true
    • See features/signatures for configuration details
  • Feature toggle for unsubscribe feature (unsubscribeFromMailingList)
  • Introduce Tempo, a native Temporal wrapper for date and time a05e543b3
    • Tempo is a thin wrapper around JavaScript's native Temporal API (with a polyfill fallback for browsers that haven't shipped it yet). It gives the app one date/time layer with consistent formatting, locale/week semantics, and strict input validation — replacing the parallel luxon and moment.js stacks we've been carrying.
    • The ultimate (later) goal is native Temporal everywhere with luxon and moment.js removed. This commit reaches that state for luxon in src/ (only src/io.ox/core/locale.js keeps a compatibility import per the Milestone 5 transition decision). moment.js removal continues incrementally after merge: ~115 src/ files still import moment via @/moment and will burn down through Milestone 7 batches, gated by the new lint:moment-imports guardrail.
    • Developer entry point: src/io.ox/core/tempo/README.md — includes a moment/luxon → tempo cheatsheet, day-of-week conventions table, and the "When in doubt, convert to date-time" callout.
  • Port of mail d&d helper app is configurable (PBSR-1746)
  • User can send automatic email replies for every received email 07da25032

Changed

  • Appointment comments are now indicated by a chat icon instead of quotes (support#1269)
  • Detect and block external mail content client-side 2994ae75f
    • Email HTML was already sanitized in the browser; detection and blocking of external images (and other external resources such as backgrounds and fonts) now happens on the client as well.
  • Increase default height of folder picker (support#1272)
    • the folder picker was pretty small even on large screens
    • default height is now 60% of viewport height
    • maximum height is 480px, minimum height is 80px
  • Load luxon on demand via @/luxon, out of the boot bundle ed39b44c3
  • Load moment on demand instead of in the boot bundle 0bd6d63a0
  • Only preload dependencies of plugins that actually load at boot 5078f0e0d

Deprecated

  • Pin @/io.ox/core/moment removal to 8.57 dddac4bfa

Fixed

  • "Use browser default" setting doesn't seem to work for fonts (support#1493)
    • Replaced the confusing "Use browser default" and "System" compose font options with a single "Sans Serif" default; the font list is now alphabetical
    • Compose font sizes now use pixels instead of points, shown as the same px list in the settings dropdown and the editor toolbar
    • Added a "Reset to defaults" link to the compose font settings
    • Existing font and size settings are migrated automatically
  • "X" in Install OX App Suite dialog is badly visible in dark theme (support#1500)
  • Adding attachments from HiDrive to a task or contact doesn’t work (support#1525)
    • Attaching a file from a connected storage account (e.g. HiDrive) to a task or contact failed
    • Such attachments now save correctly
  • After enabling a shared account in the settings, icons and unread state are set correctly e7624f89f
  • BIMI logos in email list not automatically loaded (support#1498)
  • Cannot open quoted part of mail in mail viewer (support#1536)
    • In Safari, the quoted part of an email could not be expanded
    • Fixed the quoted-text toggle (and other in-message interactions) in Safari
  • Drive shows empty folder instead of error when listing fails c6ac00065
  • End-users might miss they applied a file filter in Drive (support#1441)
  • Inline images not shown in plain text emails (support#1496)
  • Marking an email as read via the blue dot next to the checkbox no longer works (support#1430)
    • This only affected the combination of the vertical list view and visible checkboxes.
    • The checkbox's click area overlapped the blue dot, preventing it from being clicked.
  • Pasting formatted text adds extra blank lines between lines (support#1261)
  • Redirect on LGI-0016 during manifest load (support#1478)
  • Resend notification for cross-context shared mail folders (support-1489)
  • Restore attachment drag-out via referrer policy (support#1396)
  • Searching emails with "before" and/or "after" includes emails of that day (support#1521)
  • Second Factor Authentication tour has a overlapping dialog box (support#1485)
  • Selected filter directory is not shown correctly for Shared Accounts 3bcacdf38
  • Standalone viewer shows sidepanel (support#1484)
    • Do not load the sidepanel toolbar in the standalone popout viewer (opened in a separate browser tab), where it has no purpose when viewing a single file
  • UI glitches in dark mode (support#1526)
  • Unable to Download Previous File Version (Support#1488)
  • Virtual folders might trigger server-side exceptions when trying to load extended folder permissions (column 3060)
  • Whats New release date for 8.50 was not string and turned into 8.5 89e049163
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