It doesn't appear to be possible to archive mail using the API. Archiving in the web interface involves moving, rather than labeling a message to "All Mail". Not only is there no "All Mail" label listed by the API, but move is missing as well. There is only modify and this allows only adding or removing labels from a message. This is strange, because the docs say it's possible to "Create filters to automatically label, forward, or archive messages". Additionally, the filters action API includes only forward, addLabelIds and removeLabelIds.
Is there something I'm not seeing, yet?
