Yes, you will receive the confirmation voucher for your Pisa Airport car hire through the email that you provided at the time of the booking. The car rental voucher provides all the information about the booking and the car rental that has been reserved. It clearly states the things included and not included in the rental, the rate, the pickup and drop-off addresses and the phone number of the car rental facility where you are going to pick-up or drop-off your PSA car hire etc.