Hello Shiso review for B2stock: Back In Stock notify
March 13, 2017
It doesn't work! I updated my shop twice through Transfer updates, and no emails were sent out for any of the products. I tried to email support, and emails were ignored or I was told that they were working on the issue (and never heard back from them again). Don't waste your time because it's the most affordable app, try another one that actually works and has good customer support.