How do I create a purchase order and mail it?
Can't you mail "bills???" why not?
Purchase orders can't currently be created in Wave. If you'd like to read more about why that is the case, I recommend reading this post.
If you'd like to discuss how you use purchase orders and how a purchase order feature would help your business, I encourage you to join this discussion on the subject.
In the future, please be mindful of the category under which you start a discussion. This belongs under Wave Features, not Forum Rules. I've closed this discussion, but you are welcome to continue talking about this in the thread linked just above.