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 International fee rate of 4,9% + €,35 (Europe II, USA, Canada, Rest of World)
To receive €0, a payment of €0 should be sent. €n/a will go to fees. That's 0% in fees, effectively.