Estori Collective review for PreOrder Now Backorder WOD

I used this app to support my pre-sale - I used their "preorder now" button and automated emails to let customers know their preorder was received (you do need to pay for that but it's $5 for 100 emails, which I think is very worth it). It was easy to use and was perfect for my needs. Their support was really responsive as well with any questions I had.