Can messages be created/updated via API without triggering update notification emails?

Hi prasadu507Currently, it is not possible in the API. You may try the workaround suggested by cgrinton. Also, to avoid notifications when moving a topic, you could opt to not notify as mentioned in this API doc- https://devdocportal.khoros.com/t5/Community-API-v1-Reference/bd-p/restv1docs?section=commv1&leaf-id=Message.move.board.id.board_id#Messag[…]oard_id