Changelog for Thunderbird 89
The following WebExtension API changes were introduced in Thunderbird 89.
function get.includeSubFolders — Specifies whether the folders.MailFolder in the :value:`rootFolder` property of the returned accounts.MailAccount should populate its :value:`subFolders` property, and include all (nested!) subfolders. Defaults to :value:`false`.
function getDefault.includeSubFolders — Specifies whether the folders.MailFolder in the :value:`rootFolder` property of the default accounts.MailAccount should populate its :value:`subFolders` property, and include all (nested!) subfolders. Defaults to :value:`false`
function list.includeSubFolders — Specifies whether the folders.MailFolder in the :value:`rootFolder` property of each found accounts.MailAccount should populate its :value:`subFolders` property, and include all (nested!) subfolders. Defaults to :value:`false`.
function get — Get the mailTabs.MailTab properties of a mail tab.
type OnClickData.fieldId — An identifier of the clicked Thunderbird UI element, if any.
type OnShowData.fieldId — An identifier of the clicked Thunderbird UI element, if any.
type MessageHeader — Basic information about a message.
type MessageList — See Working with message lists for more information.
type MessagePart — Represents an email message “part”, which could be the whole message.