How does the seller will know that product stock is low in Woocommerce Marketplace?

On Woocommerce Multi-Vendor Marketplace Module, there is a setting on the admin end called “Enable Stock Management at Product level".

When this setting is enabled then the seller gets notified through their e-mails when their inventory decreases with subsequent orders. As soon as the inventory reaches the specified minimum level set by the admin, a low stock notification mail will be sent to the seller.  

In the “Low Stock Threshold” setting, the admin will enter low stock quantity, which will allow sending low stock notification mail to sellers when product quantity will be equal to or less than this quantity.

Please do contact us for any further queries or requirements. You can also check our Woocommerce Plugins for additional features.