There's a separate system within government for the limited group of departments and agencies that are in regular.... Because the national security adviser to the Prime Minister and foreign and defence policy are housed within the Privy Council Office, they participate in a subset of government departments that deal with e-mails, and there will be a continuation of that system. That system within government departments and with some partner countries has not been transferred to Shared Services Canada at this time.
On April 30th, 2012. See this statement in context.