You can customize what Disco is notifying you about through email in your profile settings.
Let's look at adjusting your notifications:
Finding Notification Settings
Go to the top right corner where you see your profile picture in a bubble. Click on the bubble and click on "Profile Settings". It will land on "Courses". To the right of "Courses", you will see "Notification Settings". From here you will see toggles on the right that you can turn on or off depending on what you want to be notified about by email.