Your mailing address is:
[Apt #] 550 Memorial Drive
Cambridge, MA, 02139
United States of America
Mail is delivered every weekday. Large packages are delivered to the Front Desk.
If you have unsolicited mail, or mail addressed to prior residents, you can put them in the gray boxes located below the mail slots, as shown in the photo below. The mail will be returned to sender, and you should not see it arriving your inbox (except for maybe 1 or 2 more times at most).