The cloudFile (a.k.a. fileLink) API first appeared in Thunderbird 64, and was uplifted to Thunderbird 60.4 ESR.
From Thunderbird 68.2.1 (Thunderbird 71 beta), an extension can choose to receive data for upload
File object rather than as an
ArrayBuffer. You should specify which you want as
the default may change in a future version.
The DropBox Uploader sample extension uses this API.
Manifest file properties
A page for configuring accounts, to be displayed in the preferences UI.
Name of the cloud file service.
– [Added in TB 68.2.1]
Determines the format of the
data argument in
This property was never used.
URL to the web page of the cloud file service.
A page for configuring accounts, this is obsolete after Thunderbird 60.
A manifest entry named
cloud_file is required to use