Hi Amcoautop ,
Thank you very much for your post.
Yes, sure it is important. We ask our users to be patient as the development and especially quality development takes a lot of time and money. In the free version, you can generate pdf to add them to any email client.
We will indeed have a paid extension called Purchasing. Here you will be able to do anything you desire with POs, even auto-generate and auto send POs.
Hope this helps.
Pavel