It’s what FLOTUS would be sending if 2012 had turned out differently.
Are you saying if Romney had beaten Obama in 2012, Romney's wife would be sending this out as a message? Do you mean 2008, and if Hillary had beaten out Obama for the nomination? As far as I remember Obama ran virtually unopposed in the Democratic Party for reelection in 2012, and Clinton was not among those opposing Obama's in the 2012 primaries.
If she had won the nomination and then went on to win the Presidency, in 2008, she may have indeed done the same, created her own private server. However, that would mean she wouldn't have been the FLOTUS, but instead POTUS and Bill would have become the first FMOTUS.
Can you see my confusion as to what your statement meant.