Email copied below. I haven't been able to find a list of participating restaurants anywhere.
You'll wanna pizza this offer!
Tomorrow only, the 29th of March, get 2 FOR 1 from some of your favourite pizza joints.
Head to the Deliveroo Website or Download our App and look out the above 2 for 1 pizza image to access this exclusive offer available for lunch and dinner
T's & C's: 2FOR1. Maximum order of 2 pizza purchases per customer (2 free pizzas). Free pizza will be the same as purchased or as otherwise stipulated by the restaurant. Minimum order value + $5 Deliveroo Fee applies. Valid from 8:00am 29/03/2017 to 11:59pm 29/03/2017 or until stocks last. Offer available from participating restaurants only.
Avoid. Deliveroo tries to profit from exploiting delivery staff by underpaying them and is known to ignore Australian workplace laws. Their business model involves sham contracting.