def __init__(self, 
              auth_user, 
              api_key, 
              server=constants.DEFAULT_SERVER,
              version=constants.DEFAULT_VERSION):
     '''
     Initialize SendHub Connection
     
     '''
     
     # store settings in self
     self.auth_user      = auth_user
     self.auth_key       = api_key
     self.server         = server
     self.version        = version
     
     # initialize the apiclient
     self.apiclient      = APIClient(auth_user, api_key, server, version)