Mailspring Files

On Linux, Mailspring 1.24.1 fixed accounts being lost after upgrading when the KWallet secret name changed. Mailspring now falls back to the previous secret storage key and re-saves credentials. (#2864) Thanks @LinusDierheimer!

Features:

• Added "Mark All as Read" to the folder context menu, and an option to show unread counts for all folders. Thanks @AnsCodeLab!
• New drafts in a unified inbox now default to the account of the focused thread. Thanks @AnsCodeLab!
• Added a MessageActionMenuItem extension point so plugins can add items to the message "..." menu. Thanks @AnsCodeLab!

Bug Fixes:

• Fixed mail rules breaking when a folder's ID changed right after it was created. Rules now match folders by name when the match is unambiguous.
• Fixed the sidebar not switching from "Drafts" to "Activity" and other perspectives with the same layout.
• Fixed reminders created in the draft UI missing the last reply timestamp, so they never fired.
• Uploading a new signature image no longer overwrites the previous image on Mailspring's servers. Previously, replacing a signature image changed the image in emails you had already sent, and teams sharing a Mailspring ID could overwrite each other's default signature images.
• On Windows, composer and thread popout windows no longer show a second title bar beneath the native one; press Alt in those windows to show the menu bar. Thanks @ejbiker93ss!
• On Windows, the system tray icon is no longer blurry at 125% / 150% and other fractional display scales. Tray icons now ship as multi-size .ico files so Windows can pick an exact-match frame instead of stretching the 16px image.
• Fixed popout windows sometimes opening with the wrong toolbar when a hot window is assigned a window type. Thanks @ejbiker93ss!
• Fixed link and open tracking being lost when moving a draft between accounts.
• When attaching multiple files to a draft, the file order is now preserved.
• Pasting from Excel or OpenOffice now prefers the HTML clipboard content, and pasting several files at once attaches all of them, not just the first.
• Pasted JPEG, GIF, BMP, and WebP clipboard images are now recognized so they stay inline in the composer. Thanks @AnsCodeLab!
• Fixed some hardcoded colors in package stylesheets that did not follow the active theme.

Improvements:

• Emails with an explicit black text color (common in iCloud and Apple Mail signatures) are now shown white on dark background in dark mode, instead of a bright white background. (#2850)
• The folder context menu is now grouped with separators.
• On Windows, keyboard shortcuts are now shown with Ctrl / Alt / Shift instead of mod in the preferences.

Developer:

• The Claude Desktop MCP integration now uses a stdio bridge built into Mailspring instead of relying on npx.
• --spec-directory now resolves relative paths and fails fast when the directory does not exist.