Changelog for Thunderbird 114

The following WebExtension API changes were introduced in Thunderbird 114.

messageDisplay

api messageDisplay

• function open.openProperties.file — The DOM file object of a message to be opened.

messages

api messages

• function openAttachment — Opens the specified attachment.

spaces

api spaces

The spaces API allows to manage built-in and custom spaces, and to add buttons for custom spaces to Thunderbird’s spaces toolbar.

tabs

api tabs

• event onActivated.activeInfo.previousTabId — The ID of the tab that was previously active, if that tab is still open.