Definitely case by case. I got an e-mail app fee waiver from Washington & Lee. I spoke to an admissions officer at the LSAC forum and he said it MUST accompany a hard-copy application because they don't track their fee waivers otherwise.
Ive been reading up on this and it is definitley a case by case basis. I have an LSAC fee waiver and some schools, like NYU, say that if i apply online i do not have to do anything else because they will see the LSAC waiver. Other schools, like Boalt, say i cannot apply online if i am also applying for a waiver. I have to fill out the paper app.You are probably not concerned about LSAC fee waivers, but thought id put this info here for others.