folder_info_stale

This signal indicates significant changes have occurred to the folder hierarchy of store, and that previously fetched FolderInfo data should be considered stale.

Applications should handle this signal by replacing cached FolderInfo data for store with fresh data by way of get_folder_info.

More often than not this signal will be emitted as a result of user preference changes rather than actual server-side changes. For example, a user may change a preference that reveals a set of folders previously hidden from view, or that alters whether to augment the store with virtual Junk and Trash folders.