If sending $0, the amount that will go to fees is $0 and the recipient will receive $0. That's 0% going to fees, effectively.
* Using Domestic fee rate of 1.9% + $.10 (QR code - $10.01 and above)
To receive $0, a payment of $0 should be sent. $n/a will go to fees. That's 0% in fees, effectively.