“Out of stock” implies a product that will again be in stock at some point. What if you have a product that will never be stocked again?
You could delete the product, and you could even do a 301 redirect for SEO purposes, but up till now, there was no good way to keep the product while marking it permanently out of stock.
With this plugin, this is now an option. The concept is from WooCommerce Ideas Forum
The discontinued option is available in the stock status drop-down, and it works for either simple products and variable products.
Download & install the zip archive
The plugin package installer can be downloaded from the WP2E project tab called “code”.
1 – Select the version to download if this option is available otherwise the “latest” version of the main plugin will be used.
2 – After downloading the zip archive install the plugin package installer in you local environment and activate the script from the plugin list.
3 – Under the section “Plugins” of the admin dashboard you should see a new “Dependencies & Licenses” link. Follow the instructions from this panel to finalize the installation of the missing dependencies.
Tips: Use the WP2E panel to add/suggest new dependencies to the local installation. Press F5 in the list of dependencies if the changes are not displayed right away.