You can manage your email subscriptions by going to https://registry.paratext.org. After you log on, click on your name at top right, and go to Settings. Under Notifications, you see which email address is subscribed to get notifications and Paratext News, or also to Help Improve Paratext. You can choose to change the email address these go to if you have more than one email address in your profile. (You can add another email address to your profile by clicking the Profile link).
The notification daily digest refers to notifications from the registry, such as notifications of users being added or removed or user roles changing in projects you are a member of.
If you no longer want to receive Paratext News or Help Improve Paratext, you can uncheck those boxes to unsubscribe. We do recommend that you stay subscribed to Paratext News, because these are infrequent emails about important developments in Paratext that we’d like you to know about.