Back in stock Restock Preorder

We just installed this app today, so don't have experience with customers' emails. It appears to be working great on our site. I wasn't able to set it up on my own, but customer service (Cator) was able to install it for us right away. We then noticed that our theme didn't allow for customers to select specific variants. Customer service was able to fix that issue, too. I'm excited to see how many sales we generate on items when then come back in stock!