Alternatively, you can press ⌘ Command+, on your keyboard to open the preferences window.
If you’re using Windows, this button looks like two figureheads above the three dots icon on the bottom-left. On Mac, click People between Calendar and Tasks in the lower-left corner.
If you don’t see your saved groups here, click On My Computer on the left navigation panel. All your groups are saved and stored here. If you don’t have any groups, you can just create a new contact group and start using it right away.
Enter a subject line that allows your contacts to quickly find out what your email is about. Enter your email message in the body field.