How do you get notified if you get admitted off the waitlist?

I have read in older posts that students will get a phone call from Lehigh informing them that they are accepted off of the wait list which is a very nice touch. However, do they put it in writing in an official email? Or, is it on the portal as well? I was just curious.

Also, if a student is not chosen, how are they informed? Do they send out a letter? email? or post it on the portal as well?

Thanks!!