QuickMail v0.5.7 Release Notes

New Features

Settings dialog

A new Settings dialog (File → Settings) puts all user-configurable options in one place

General tab

Keyboard Shortcuts tab

Assign custom key bindings to any registered command without editing config files:

• Select a command from the list and press Set… to open a dedicated key capture dialog
• Press any Ctrl, Shift, or Alt combination to assign it; unmodified single keys are not accepted
• If the combination is already used by another command, a conflict dialog identifies the clash and lets you choose another key or cancel
• Press Restore to remove a custom binding and return to the default
• All custom bindings survive app restarts and work alongside the command palette

Move/Copy to Folder for grouped views

Move to Folder… and Copy to Folder… now appear in the Shift+F10 and right-click context menu for sender groups (By Sender view) and recipient groups (By Recipient view), in addition to the existing per-message support. All messages in the group are moved or copied in one action, and focus returns to the group list when the operation completes.

Search Folders command

A dedicated Search Folders… command (Ctrl+Shift+F, also in View → Search Folders…) opens the flat, searchable folder picker. This is separate from the folder tree (Ctrl+2 / Ctrl+Y), which now consistently focuses the tree pane.

Improvements

Message performance

• Prefetching — When you open a folder, the first ten messages are prefetched from IMAP in the background so that opening them shows the body instantly. The five messages above and below a newly opened message are also prefetched so navigation feels immediate.
• Faster sync — Folder sync operations that process large All Mail views (thousands of messages) now use key-based lookups instead of scanning the full list on every incoming message, eliminating multi-second UI pauses during background sync on large mailboxes.

Message rendering

• Heavy or marketing-style HTML messages are prepared off the UI thread before being sent to the reading pane, so the interface stays responsive while complex mail loads.
• Messages with deeply nested tables, large embedded images, or excessive inline styling are shown in a simplified reader mode rather than attempting to render the full HTML.
• A timeout on reading pane navigation prevents a malformed message from holding up the interface indefinitely.

Folder navigation

• Ctrl+2 and Ctrl+Y consistently focus the folder tree pane. Use Ctrl+Shift+F when you want the searchable flat list.
• Selecting a folder from the picker now shows cached messages immediately while IMAP refreshes in the background, rather than waiting for the server before returning control.

IMAP connection management

• The default connection limit is 6 per account (configurable up to 15 via MaxImapConnectionsPerAccount in config.ini).
• Background work (sync, polling, UID checks, preview fetches) is capped below the pool maximum so opening a message or downloading an attachment always has connection capacity available.

Accessibility

Quieter startup

Screen readers no longer receive a flood of "structure changed" events while the initial background sync runs. The message list is now populated silently during sync and presented in a single update at the end. The periodic "N messages loaded so far" announcements have also been removed.

Default account label

The default account in File → Manage Accounts now shows a - default label next to the account name in the account list, both visually and for screen readers.

Reading pane focus

Focus is restored into the message body in the reading pane after a message finishes loading.

Bug Fixes

• Escape freeze — Pressing Escape to close the reading pane could hang the UI for several seconds. Fixed by properly cancelling the in-flight body load chain and stopping WebView2 navigation before clearing the pane.
• Tab lands on menu bar — Pressing Tab from the message list no longer moved focus to the menu bar. Focus now continues through the reading pane as expected.
• Toolbar in Tab order — The toolbar was included in the normal Tab sequence, causing an unexpected stop between the folder tree and message list. It is now excluded.
• Delete in grouped views — After deleting a message in Conversations, By Sender, or By Recipient view, focus now moves to the next message in the same group rather than losing the selection entirely.
• Account deletion cleanup — Deleting an account now also removes its locally cached messages from the database and clears any stored OAuth tokens, leaving no orphaned data behind.
• Link handling — Plain-text http and https URLs in messages were not opening correctly in some cases. Link detection and external browser handoff have been made more reliable.

Security

• Attachment path traversal — Attachment filenames containing path separators (.., /, \) could previously be written outside the intended download directory. Filenames are now sanitised before saving.
• Content Security Policy — The reading pane CSP now explicitly blocks object-src, inline styles from unknown origins, and a broader range of active content.
• PII in logs — Email addresses and message subjects are no longer written to the log file at default log levels. They appear only when the /debug flag is passed at startup.

Code quality (internal)

• BatchObservableCollection<T> added: an ObservableCollection<T> subclass with BeginBatch()/EndBatch() that suppresses per-item change notifications and fires a single Reset at the end. Used by the message list during incremental sync to reduce UIA noise.
• SettingsViewModel and SettingsDialog added with full test coverage in SettingsViewModelTests.
• All keyboard shortcuts introduced in this release are registered in CommandRegistry and appear in the keyboard customization UI.