docs: def delete_user_by_email(self, email):
  	
  		"""
  		This call will delete a user from the Iterable database.  
  		This call requires a path parameter to be passed in, 'email'
  		in this case, which is why we're just adding this to the 'call'
  		argument that goes into the 'api_call' request. 		
  		"""
  		call = "/api/users/"+ str(email)
  
  		return self.api_call(call=call, method="DELETE")