There are 3 email preferences (Courtesy Notices, Critical Announcements, and Upcoming Events) that tie to the choices for the Communication Type when you need to use the Communicate button in Reports.
Instructions
Search for and select a user
Click Edit User (pencil icon) next to the desired Account Member
If needed, click Add Email
Enter your Email
Select a Communication Type from the drop-down
Courtesy Notices: Non-critical announcements
Critical Announcements: Important, likely emergency announcements
Upcoming Events: Schedule of upcoming events
Note: You can select one, two, or all three types
Click Save User