fee waiver postmark date question

I just submitted my cornell application (early decision) through common app. I also mailed my collegeboard fee waiver today (cuz my guidance counselor didnt tell me anything about this until yesterday) but I realized that the fee waiver letter might not get postmarked until monday, Nov, 2 which is past the college deadline. Would my application still be considered late? Should I just pay the fee to be safe?

How bout for umich ea which has the same 11/1 deadline?

B