Allow preseeding Enigmail options
Tails uses its own keyserver, SOCKS port (for stream isolation), and no longer includes Polipo or Privoxy. It doesn't appear to be possible, currently, to override these configuration variables via preference files. Indeed, things like network.proxy.socks_port for example get overridden by Torbirdy.
Trac:
Username: kytv
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information