Works great. I changed themes recently to one that had a "back in stock" notice but you manually had to send the emails. I ran back to Now in stock as fast as I could when I realized how much time they save me.

UPDATE 7/27/18: I've been in contact with the developers via email, and they are saying the issue was caused by a change in Shopify's API - I know that Shopify did change the area of the API they are referring to, and after some discussion, it appears they are on track to release an update soon that will address this change. I'm a little disappointed they did not proactively adjust their code for this change, and/or test to see if their code would break when the change went into effect, but testing does seem to be something that most of the more feature-rich, but less pricey, apps are lacking. This app DOES have a comprehensive, if not intuitive, UI - which could make it hard to test. I've updated my review to 4 stars and asked them to let me know when the app is ready for re-testing. I will update again once that is done. If it fails the re-test, I will adjust stars - if it passes, I think 4 stars is appropriate for what is essentially a good app, at a great price, that at the moment lacks some oversight and testing. --------- I was very surprised, and disappointed, and a touch angry, to realize this app is not sending email notifications when a transfer accepts inventory. (THANK you other reviewer who pointed this out). We'd been ignorantly relying on this app for a while. I thought it was excellent. I have also emailed the developers to see what they say, but for that reason, unless this is fixed, this app will be an absolute failure for us for sure. I'm greatly aggravated to know this app has been failing to work in that way for a while, and wondering how many sales we've lost as a result.

AMAZING APP. Developer is so helpful!