Feather Mail 0.4.2

New mail arrives within seconds, the app no longer crashes or slows down after running for a long time, and message cards show readable text.

Interface

• Message cards in the list show the words of the letter instead of raw CSS or HTML from newsletters. Cards already stored with markup are repaired from the cached message body.
• Scrolling the message list with the mouse wheel no longer draws a gray line and shadow above the refresh bubble.
• Switching folders or clicking the folder that is already open no longer reloads pages and message bodies that have not changed.

Fixes

• Every account now keeps its own IMAP IDLE connection to the Inbox, so new mail shows up as soon as the server announces it. Before this, each mailbox was checked only about every two and a half minutes.
• Fixed a crash after long sessions with notification sounds. Each sound played opened new system handles until the app ran out of them.
• Fixed memory growth that made the window sluggish over time. Message rows, folder menus and the Move picker are now released after use.

Feather Mail 0.4.1

0.4.1 — 2026-09-10

Clicking an email address now composes in Feather Mail, sending shows its progress, and letters in non-Latin scripts arrive readable.

Interface

• Clicking an address in a message opens Feather Mail's own composer with From and To filled in, instead of handing the address to another mail app. A mailto: link from a browser or another app reaches the running window; no second instance is started. Settings → General shows which app handles email links and offers Make default.
• While a letter is being sent, the sidebar activity bar says "Sending…" until the server confirms it.

Fixes

• Letters written in Cyrillic or any other non-ASCII text now declare their UTF-8 encoding, so recipients no longer see garbled characters. Server-side draft copies declare it too.
• Each autosave of a draft no longer leaves an extra copy in the server's Drafts folder, and sending a draft removes its copy from Drafts along with the local draft.
• With several accounts, a queued send is picked up right away instead of waiting for the other accounts' idle turns.

Feather Mail 0.4.0

0.4.0 — 2026-09-06

Smoother refresh feedback, visible loading progress and clearer settings, with fixes for dark HTML mail and folder menus.

Interface

• Pull down with the mouse or scroll wheel to refresh: the list follows the gesture and springs back smoothly. The feather bubble expands, pops and fades away within half a second, even while the server is still working.
• Fetching mail now shows a slim activity bar in the sidebar. Initial mailbox downloads retain their measured percentage. Reduce animations keeps a static indicator and disables movement.
• Settings sections have matching icons. Check for updates shows that it is checking, then keeps the result or error below the button.
• Buttons and navigation use short, subtle transitions, with support for reduced motion.

Fixes

• Refresh animations no longer jump between wheel steps or disappear abruptly when a drag ends. Dragging the scrollbar no longer triggers a refresh, and list position is preserved during synchronization.
• Folder context menus stay open while background folder counts update.
• HTML messages with their own light paper background remain readable in the dark theme.
• Refresh and scroll handlers release their widgets when the window closes, and hidden indicators stop animating.
• MCP confirmation text uses the correct singular form for one conversation.

Feather Mail 0.3.0

Adding a mailbox is the whole of this release: accounts you are already signed into on this desktop can be
added with one click, and the Add-account screen was rebuilt around that choice.

Add account

• Sign in with a desktop account. Feather Mail reads the accounts your desktop already holds (GNOME
  Online Accounts) and lists the ones that carry mail. One click adds the mailbox: the token comes from the
  session account manager, so there is no browser window, no password, and no client secret in the app.
• The Add-account screen now has three levels. The first asks where the mailbox lives — IMAP or
  Linux. IMAP leads to the familiar presets (Google, Microsoft, Yandex) and the manual form; Linux
  lists the accounts you signed into on this desktop. If there are none, that level explains how to add one
  in Settings instead of showing an empty list. Back returns to the level you came from.
• Both first-level buttons carry an icon, and their label and hint line up on a single left edge.

Reading mail

• The message header now names the address the letter actually arrived at instead of saying "to me" — the
  one that matters when All accounts mixes several mailboxes into one list. When a message went to several
  recipients, the header names your own mailbox among them.

Fixes

• XOAUTH2 sign-in to Gmail failed with "Couldn't reach the server." The IMAP reply to AUTHENTICATE was
  read one line deep, and Gmail answers a successful bind with an untagged * CAPABILITY line before the
  tagged OK. That first line was mistaken for the result. Both the probe made while adding a mailbox and
  every live session shared the bug; they now share one corrected implementation that reads on to the tagged
  line.

Downloads

• feathermail_0.3.0_amd64.deb — Debian, Ubuntu, Linux Mint (x86_64)
• Feather-Mail-0.3.0-x86_64.AppImage — other recent x86_64 distributions

SHA-256

956218874d0f5550432f32bfecc1f2e1f3492388b05ab2a34a28539ef70552d8  feathermail_0.3.0_amd64.deb
b812e435f28adf7329987485a7d3ca8eed82dbdb5f0f11217ef411129d8bd01a  Feather-Mail-0.3.0-x86_64.AppImage

Feather Mail 0.2.0

A stability release driven by a full audit of the client. No new account types; the fixes below cover
reading, syncing, searching, composing and the MCP server.

Reading mail

• A <style> element with any attribute no longer bypasses the CSS allowlist, and > / & inside author
  CSS no longer break the stylesheet.
• MIME parts whose boundary line carries trailing whitespace (RFC 2046 transport padding) now render instead
  of showing an empty body.
• Attachment names encoded per RFC 2231 (filename*=) are decoded, so they keep their real file names.
• Replying to an HTML-only message now quotes its text.
• The folder chip next to an open message names the real folder instead of always saying "Inbox"; list rows
  in Starred, Snoozed and All accounts now carry a folder chip too.
• Times in the list and reading pane are computed from the real clock. Previously every message newer than
  May 2024 showed a time of day instead of a date.
• Folder names are decoded consistently in the sidebar, the list header and the message view; sender names
  in thread cards are RFC 2047-decoded.
• Secondary and tertiary text colours were darkened in both themes to clear WCAG AA contrast.

Sync and folders

• Mail deleted on the server is now removed locally. On CONDSTORE servers a sliding walk reconciles the whole
  mailbox, one 200-UID batch per pass, and resumes after a restart.
• CONDSTORE is actually enabled on SELECT, so flag changes from other clients arrive incrementally.
• A date header with a non-ASCII month name no longer panics the sync thread.
• Deleting an account no longer leaves a stale backoff record that spun the sync worker.
• A cancelled sync pass is no longer recorded as a completed one.
• Creating and renaming folders with non-ASCII names sends modified UTF-7 to the server, and renaming under
  a non-ASCII parent no longer double-encodes the prefix.
• Removing vanished messages also removes their cached bodies from disk, and "Clear cache" really deletes
  the files.
• The OAuth reauthorisation flow keeps the refreshed refresh token, and a % before a multi-byte character
  in a redirect no longer panics.

Queue and drafts

• Repeating a command after an identical one was acknowledged is queued again instead of being silently
  dropped.
• Queued operations replay in the order you issued them, even when one was retried later.
• Permanent delete acts on the messages that were in the thread when you asked, not whatever arrived since.
• Deleting a thread that a reply draft points to no longer fails with a foreign-key error and stalls sync.
• Drafts: a failed sequence lookup no longer overwrites an existing draft; discarding a draft while
  autosave is in flight no longer resurrects it; edits made just before closing the compose window are kept.
• Reply and forward from All accounts save and send through the draft's own account.
• Opening a search hit from All accounts switches to the hit's account instead of an empty list.
• Star, search history, folder create/rename/delete, account rename/removal and move all run off the UI
  thread; the interface never blocks on SQLite.

Search

• Words inside Japanese and Chinese text are found (e.g. "東京" inside a sentence), and "ё" matches "е"
  in both directions. Existing profiles reindex in the background after the upgrade.

Notifications

• A burst of more than 20 new messages is announced as one summary notification instead of losing
  everything below the cut.
• A mailbox added in the current session starts its notification watermark at its newest message, so the
  first sync does not announce the whole history.

Add account

• The "Other IMAP" form looks up IMAP/SMTP settings (Thunderbird ISPDB and DNS SRV) when you leave the
  email field, filling only the fields you have not typed into.

MCP server

• send_email no longer bumps the draft revision on every call for bodies with surrounding whitespace.
• create_draft / update_draft no longer accept an arbitrary from address; update_draft without a
  draft_id is rejected instead of creating a new draft.
• Waiting for a UI confirmation no longer floods the audit log.
• The permissions and tools documentation matches the registered tool set and the real limit behaviour.

Storage

• The database uses IMMEDIATE transactions for read-then-write paths, so a concurrent writer waits instead
  of failing with SQLITE_BUSY_SNAPSHOT.
• Cached bodies and attachments are written with owner-only permissions.
• Schema upgraded to v29.

Feather Mail 0.1.1

A focused performance patch for pull-to-refresh.

• Removes the CSS margin transition that caused repeated layout work while the refresh bubble followed the pointer or wheel.
• Keeps the opacity and burst feedback, including reduced-motion behavior.
• Adds a regression test that rejects layout-property transitions in the shell CSS.

Packages: x86_64 .deb and AppImage. The AppImage uses the host WebKitGTK 6.0 runtime.

Feather Mail 0.1.0

Changelog

0.1.0 — 2026-09-01

First public Feather Mail release.

Highlights

• Native GTK4/Relm4 three-pane mail client for Linux with multiple accounts and All Accounts views.
• Local SQLite cache, background IMAP/SMTP synchronization and a durable offline operation queue.
• Threaded reading, compose/reply/forward, drafts, attachments, archive, trash, star, mark read, move, snooze and undo.
• Local FTS5 search with operators and globally ordered results across accounts.
• Safe HTML rendering with JavaScript disabled, CSP isolation, tracking protection, remote-image controls and a bounded CSS allowlist that preserves common sender layouts.
• Inline CID raster images and system-default opening for downloaded attachments.
• Recipient autocomplete from received and successfully sent mail.
• Keyboard navigation, desktop notifications, update checks and pull/wheel-to-refresh.
• Optional local MCP stdio server, disabled by default, sharing the same Core command bus and permission model as the UI.
• .deb and AppImage packages for x86_64 Linux.

Privacy

• No telemetry.
• Passwords and tokens use the system keyring, never SQLite or diagnostic exports.
• Remote images and tracking pixels are blocked by default; link confirmation and plain-text preference are functional settings.

Known limitations

• Add Account is manual IMAP/SMTP in 0.1. Google and Yandex generally require app passwords. Microsoft 365/Outlook.com may reject password-only authentication; interactive Microsoft OAuth is not yet available in the UI.
• The runtime floor is GTK 4.10 and WebKitGTK 6.0. The AppImage intentionally relies on the host WebKitGTK runtime.
• Packages were built and smoke-tested on Ubuntu 25.10. Other distributions listed in the install guide match the required package versions but have not all been exercised yet.