Changelog for Thunderbird 105

The following WebExtension API changes were introduced in Thunderbird 105.

action

api action

Use the action API to add a button to Thunderbird’s unified toolbar. In addition to its icon, an action button can also have a tooltip, a badge, and a popup.

compose

api compose

• event onAfterSave — Fired when saving a message as draft or template succeeded or failed.

• event onAfterSend — Fired when sending a message succeeded or failed.