For the normal letter I get it, but for email it seems kinda outdated and just takes up space.Eager Applicant
Street
City, State, Zip
LSAC#: L12345678
Month, Day, Year
Desirable School of Law
Street
City, State, Zip
The alternative would be to begin with "Dear members of the admissions committee..." and to put my name/lsac number in the signature. I don't think listing either my address or the school's address is needed.