Changelog

0.11.0 · October 3, 2026

A browser beside your mail

On the Mac, links from mail and chat open in a browser in the side panel, with Chrome extensions like 1Password.

New

• Links open as tabs beside your chats, next to the conversation they came from.
• An address bar that searches, back and forward, and a start page: ⌘T, then ⌘L.
• Add extensions from the Chrome Web Store and pin them to the toolbar.
• 1Password unlocks from its button and fills in sign-in pages.
• Expand the panel to fill the window when a page needs the room.

Improved

• Shift+↑/↓ selects several conversations in the list.
• The sidebar and message list start narrower, leaving the conversation more room.
• Otter Mail is open source, under the MIT license.

0.9.0 · October 2, 2026

Mail your way

On Mac and the web, choose your inbox layout or keep a conversation floating while you browse.

New

• Appearance offers Classic or With dividers, plus Split view, Full inbox and Floating layouts.
• Floating conversations move, snap back, resize and minimize to the bottom right.
• Day groups collapse, and read messages can have a muted background. Turn either setting off.

Improved

• Arrows highlight rows; Enter opens them. Automatic opening is an optional setting.
• Keyboard previews wait two seconds before becoming read. Adjust the delay in Appearance.
• Buttons respond to hover immediately.

Fixed

• Browsing past a draft keeps keyboard navigation active.
• Opening a conversation marks every message read immediately, before Gmail finishes.

0.8.1 · October 2, 2026

Chat results

Copy text from agent chats and open what the agent changed directly beneath its reply.

• Copy a whole chat message or select just the text you need.
• On the Mac, a compact list shows each turn's changes, including labels and archives.
• Click a draft, project, view or calendar event to open it.

0.7.0 · October 1, 2026

Spaces and projects

Views become spaces of their own in the rail, and Projects keep one piece of work's conversations, from any mailbox, in one place.

New

• Projects: gather a piece of work's conversations, documents, links and notes until it's settled.
• Right-click any conversation and choose "Add to project", from any mailbox.
• Views are spaces in the rail: just their list, across every mailbox they draw on.
• Make a view with "New view" (+) in the rail: in this mailbox, with these labels, without those.
• Give a view an icon or an emoji, in a color.
• With the sidebar hidden, hover a space in the rail to peek at its sidebar.
• Your agent can start projects, add conversations to them and make views.

Improved

• Views are made and edited where they live, no longer in Settings.
• "Show unread dots in the rail" is a setting now, off to begin with.

0.6.0 · October 1, 2026

A new sidebar

Your mailboxes now sit in a slim rail down the left edge, so switching and spotting new mail never needs the sidebar.

New

• A rail of mailboxes down the left: click one to switch; a dot marks new mail.
• Add a mailbox from the rail's +; your account, Settings and feedback sit at its foot.
• Hiding the sidebar keeps the rail, so every mailbox stays one click away.
• On the Mac, the title bar and rail let the window's frosted glass through.

Improved

• The sidebar sits inside the mail panel, with an edge that shows in every theme.
• The sidebar and agent toggles show whether their side is open.
• The unread filter wears Apple Mail's filter icon, filled while it's on.
• Mail and Settings each remember their own sidebar, open or closed.

0.5.19 · September 30, 2026

Themes by asking

Describe a theme to the agent and it makes it and puts it on: Claude and Codex can now make, change and wear themes.

New

• On the Mac, ask Claude or Codex for a theme in your own words; it's made and worn.
• Ask them to change the theme you're wearing: a built-in is copied first, never changed.
• They can switch themes too, for light or dark mode.
• Theme changes ask first, like mail changes, unless the chat has Full access.

0.5.18 · September 30, 2026

Your own themes

Make color themes of your own, the way T3 Code does: duplicate one and tune it while the whole app repaints as you go.

New

• Duplicate any theme to make it yours; built-in themes stay as they are.
• The editor is T3 Code's: set two colors and the rest follows, or open Advanced for every color.
• Pick a color in the editor to dim everything except where it's used.
• "Add theme" takes T3 Code and VS Code theme files; export yours to share them.
• Your themes sync with your Otter account.

Improved

• Appearance is more compact, with built-in and custom themes apart.

0.5.17 · September 30, 2026

Search in Settings

Type what you're looking for at the top of Settings, and pick it to land right on it.

New

• Search Settings by name or by what a setting does: "sync", "dark", "signature".
• Each result shows where it lives; picking one opens it there, highlighted.
• Shortcuts are searchable too, even by their keys: "mod+b" finds Sidebar: Toggle.
• Press / in Settings to start searching.

0.5.16 · September 30, 2026

Feedback with agents

Turn a bug report or feature idea into a clear GitHub issue, with help from your own coding agent.

New

• "Send feedback" in the mailbox menu, Settings, and ⌘K.
• Choose a bug report or feature request, and the affected platform.
• Add a screenshot and anonymous diagnostics; review everything before opening GitHub.
• On the Mac, Claude or Codex investigates and brings its draft back into the app.
• Use Ghostty or your usual terminal; Otter Mail remembers your choice.

0.5.14 · September 30, 2026

Profile pictures

Each Gmail mailbox now shows your Google profile picture, so you can tell them apart at a glance.

Improved

• Setup shows the pictures of the mailboxes you connect.
• A new Google photo or name shows up on its own, on every device.
• On the Mac, "Show unread count on Dock icon" in Settings → Appearance turns the badge off.

0.5.12 · September 30, 2026

What's new

Every release now comes with a short note, in the app and on the site.

New

• "What's new" in Settings lists every release, newest first, and works offline.
• After an update, a toast names the new version and opens its note.
• The update card links to the coming version's note before you restart.
• "What's new" in ⌘K.
• The changelog on the web at mail.otterware.app/changelog.

0.5.11 · September 30, 2026

A smarter ⌘K

Type what you want and Enter does it: the command you name comes first, and mail search is one ↓ away.

Improved

• ⌘K ranks what you type: "set" finds Settings, "work" your Work mailbox, "upgrade" Update Otter Mail.
• Names and searches like from:maya still go straight to your mail.
• Mail results arrive below the search, so nothing jumps as they load.
• The Appearance and Theme lists rank the same way: "oc" picks Ocean.

0.5.10 · September 30, 2026

Onboarding

A first run that sets you up for real, and a one-minute tour of the app on your own mail.

New

• A setup: add a mailbox, pick a look, notifications, your agent, then practice the keys.
• The keys step is a practice inbox that answers your real shortcuts, remapped ones too.
• A tour of mailboxes, search, views, the reader and the agent. Run either again from ⌘K.
• "Update Otter Mail" in ⌘K checks, downloads and restarts into the new version.

Improved

• Hermes connects right from the setup's agent step.
• Mac releases are Apple Silicon only.

0.5.9 · September 30, 2026

Mail on shared hosts

Adding a mailbox finds the right server for domains on shared hosting.

Fixed

• When a domain's mail server answers IMAP itself, adding the mailbox now finds it.
• A sign-in that fails on a certificate names the domain's mail server.

0.5.8 · September 30, 2026

Permission cards

When an agent wants to change something, it asks in a card where you type, and shows exactly what will happen.

Improved

• The card names the action, the command or the files, then Deny (Esc) or Allow once (↩).
• Allowing for the rest of the chat, or stopping the agent, is behind "…".
• Otter Mail moved to mail.otterware.app.