When filters return zero products, most stores show “No products found.” The customer leaves. FilterKit Pro does three things instead:
Close matches, alternative suggestions, and a “Notify Me” form instead of a blank page.
Loosens one filter at a time to find nearby products. “Red XL Jacket” returns nothing? It tries “Red Large Jacket” and “Blue XL Jacket” with a note explaining the difference.
Clickable buttons linking to filter combinations with actual results: “Red + Large, 8 products” or “Blue + XL, 5 products”.
A form for leaving an email address. When you restock what they wanted, the plugin sends them an email with a direct link to buy. All automatic, no manual work.
All three are on by default. Toggle individually and customize in WooCommerce, Settings, FilterKit Pro, Features.