@ElisabelR - we are using PDM notifications heavily at our client and i haven't personally seen any other configurations than the user-level notification preferences.  Our recipients (btw, we use email distribution as a common PDM user) are using their own Outlook filters to weed out some of them.  Many recipients (which include QA & Business teams) actually have started to find values in detailed notifications sent out in each step (though initially they felt too many) and using them to monitor detailed progress on latest deployment. On another topic, we have built custom notifications using custom task feature in PDM if clients ever have a need to build custom notifications sent by PDM.  I've documented here - https://support.pega.com/discussion/building-custom-email-notification-deployment-manager