They don't send anything in the mail . You can get all approriate info on your account and on the lsac web site. About 2 weeks before he test you'll get an admission ticket with your photo and the address of the the testing center you chose.
I just called the LSAC and the guy said the last "event" they had on my file was printing my admission ticket. There's nothing else there showing that I took the test. This is unreal.