The title of the email you get is: "United States Naval Academy Application Status Change Notification"
There are two options when you open that email.
1. The email has no content. This means you need to log into the application and check status. It can either be "No Appointment Offered" (most of the time) or it could be some other notification of contingency (medical waiver required, etc.).
or,
2. The email DOES have content and it says:
Dear Xxxxxx,
I am pleased to offer you an appointment to the United States Naval Academy as a member of the Class of 2023. You should take pride in having successfully competed with outstanding young people from across the nation for admission into this historic institution. Acceptance of this appointment will be your first step on a challenging voyage of discovery that will afford you a world-class four year degree and commission as an officer and leader in the United States Navy or Marine Corps.
This program is highly competitive and will prepare you morally, mentally, and physically for the privilege of leading Sailors and Marines. For this reason, I suggest that you to carefully read the pamphlet entitled "United States Naval Academy A message to Those Selected for Admission" available within the Candidate Information System (CIS) https://candidateinformation.usna.edu/ITSD/cisp/acawq000$.startup. If you decide to accept this offer of appointment, please indicate so within CIS as soon as you have made your decision but no later than May 01 of 2019.
Induction Day for the Class of 2023 will be held on . After you accept this offer of appointment, you will receive additional instructions including your specific report time on Induction Day.
I congratulate you on your fine record of achievement and invite you to join the ranks of over 81,500 men and women alumni who have attended the United States Naval Academy, including one President of the United States, 24 Members of Congress, 53 Astronauts, 73 Medal of Honor Recipients, and two Nobel Prize winners. I look forward to welcoming you into the Brigade of Midshipmen this summer!
Superintendent
United States Naval Academy
At that point, you log into the application and the status changes to "Fully Qualified Offer of Appointment" and then you have the option to ACCEPT the offer.