- The bug here is that email that was never read will be
- archived. That's bad. With the command set above, the user can
- avoid the problem by just not running "notmuch new" while reading
- mail, but the same problems exists with the API. One possible
- solution would be to store an additional timestamp with each mail
- document for the time it was added to the database. Then searches
- could return a timestamp, and the client could pass that same
- timestamp back to the archive command to not modify any messages
- with a timestamp newer than what's passed.