Shopify automatically creates a collection to display all of your products when you launch your store. This collection has a url of yourstore.com/collections/all and is not immediately editable by default. We think it best to have full control of the way products are displayed to your customers and recommend taking control of this collection.
Step 1: Go to Products > Collections > Create collection
Step 2: Name the new collection All
Step 3: Add automated or manual filters as you see fit
Now you have full control to the products that are visible to your customers when using collections/all.
Continue on to our discount tips to see how to further utilize the collections/all concept.