void CreateMailboxIfNotExist(ClaimsPrincipal userInfo)
{
var userId = userInfo.Id();
if (!_messageSource.ExistsForUser(userId))
{
var user = _userSource.Get(userId);
var box = new MessageBox
{
UserId = userId,
Messages = new Dictionary <string, IMessage>()
};
_messageSource.Create(box);
}
}