Just got this email from Deliveroo in to celebration of their 4th Birthday, they're giving away free Frank Green coffee cups with every purchase of a hot beverage tomorrow at participating locations in the app.

Snippet from the email

Sip away with Deliveroo and Frank Green

Our new pickup service allows you to skip the queues on all your favourites. To celebrate we’re giving away Deliveroo Frank Green reusable cups. All you have to do is visit the app tomorrow and order a tea or coffee on Pickup from one of our selected restaurants and cafes*.

PS - It’s our 4th birthday here in Australia, and we’re the ones giving stuff away. Nice hey.