Keyboard Shortcuts

Main Window

Shortcut Action
F6 / Shift+F6 Cycle panes forward / backward
Ctrl+1 Focus account list
Ctrl+2 Focus folder tree
Ctrl+3 Focus message list
Ctrl+9 Focus status bar
Ctrl+Shift+P Command palette
Ctrl+N New message
Ctrl+R Reply
Ctrl+Shift+R Reply All
Ctrl+F Forward
Delete Delete
Ctrl+Q Mark as Read
Ctrl+A Select all messages (message list)
Alt+Enter Message properties
F5 Refresh
Ctrl+Shift+E Empty Trash
K Toggle flag
Ctrl+Shift+K Pick flag
Ctrl+Shift+S Search messages
Ctrl+Shift+F Search folders
Ctrl+Shift+V View menu
Ctrl+Shift+G Grab Addresses from Message
Ctrl+Shift+B Address Book
Ctrl+Shift+L Rules Manager
Ctrl+, Settings
F1 User Guide
Shift+, First message in group
Shift+. Last message in group

Move to Folder… and Copy to Folder… are available from the context menu (Shift+F10) or the command palette; they have no default keyboard shortcut. Manage Themes, Next Theme, Previous Theme, and Report a Bug are likewise command-palette-only unless you assign a shortcut yourself in Settings → Keyboard.

Calendar list (when the Calendar folder is selected): T filters to today’s events; Enter opens the source invitation email; F5 refreshes; arrow keys browse.

Tabs

Shortcut Action
Ctrl+Enter Open message in new tab
Ctrl+Tab Next tab
Ctrl+Shift+Tab Previous tab
Ctrl+W Close tab
Ctrl+Shift+T Focus tab strip
Ctrl+Shift+`` Tab list

Compose Window

Shortcut Action
F6 / Shift+F6 Cycle between address fields, subject, and body
Alt+U Focus Subject field
Alt+M Focus From account
Alt+Y Focus message body
Alt+S or Ctrl+Enter Send
Ctrl+Shift+1/2/3 Switch to Plain Text / Markdown / HTML mode
F7 Check Spelling (full dialog)
Ctrl+F7 / Ctrl+Shift+F7 Next / previous misspelling (inline)
Alt+1 / Alt+2 / Alt+3 Accept first / second / third spelling suggestion
F8 Open preview (Markdown and HTML)
Ctrl+B Bold
Ctrl+I Italic
Ctrl+U Underline (HTML only)
Ctrl+Shift+X Strikethrough
Ctrl+Alt+1/2/3 Heading 1 / 2 / 3
Ctrl+Shift+L Bullet list
Ctrl+Shift+N Numbered list
Ctrl+L Insert link
Ctrl+Space Clear formatting
Ctrl+T Announce formatting at cursor
Ctrl+Shift+T Show formatting in browsable list
Ctrl+Shift+A Add attachment
Ctrl+K Check addresses
Ctrl+Shift+P Command palette
Escape Close window (when no menu or dropdown is open)

Insert Template… and Save as Template are available from the command palette; they have no default keyboard shortcut.