How long after getting a confirmation email should it take for me to receive a letter of acceptance/rejection? It took three weeks to get a confirmation email.
Early April. And don’t worry unlike the confirmation email which is inconsistently sent out over a week to applicants and takes forever, the decision emails go out the same day for everyone (though they do it in flights within a 24 hr period so their servers don’t crash). Once you hear others have their decision letter you’ll know at latest within a few hours. Sources: http://www.ugadm.northwestern.edu/apply/application-options.html