I've configured my Magento ver. 2.2.4 to send email to customers that have registered themselves for an stock alert when the product which is "out of stock" goes to be back in stock, but when I try to do this I don't receive any message for this, it's strange because I receive message for new users, newsletter, orders ... but not for a restock of an item. I've added the cron to "*****" in the database and the default cron is running on my server.
I've seen a lot of plugins with insane prices, but it's a Magento core feature so I don't want to pay a huge amount for this.
If anyone has a solution it would be nice if you share :D
Thank you in advance for your help.