When a product is out of stock, the store owner wants customers to have the ability to pre-order, without paying. Similar to stock notify, but the store owner will manually email back customers once the stock arrives. Something like'This product is out of stock, notify us, and we will order it in for you within 1 week.'
So it needs to collect: customer email and product SKU. As many customers will be non-registered users, what would be the best way of capturing this data, and emailing it to the store owner?
I was thinking flags/rules module, or do you think a custom module would be simpler?
Thanks in advance.