Came across this article: https://www.gizmodo.com.au/2014/09/how-to-use-the-infinite-n…
So, basically, if you email is john@gmail.com. You can simply use john+1@gmail.com, john+amazon@gmail.com, etc. That will create alias.
Do you guys use this? I wonder if this works for Audible and Amazon? That way you don't need the hassle of creating a brand new email account.

Yup, all the time. Especially for www.ozbargain.com.au/competition