Get a Web App/Site that allows you to expose your QuickBooks company inventory to your clients in your Website.  Your authenticated users will be able to browse your inventory and will have access to the availability and prices of your products.  They can have a search bar to look for products according to specific patterns and will be able to add products to a shopping cart to proceed to checkout later. The Web App will send email notifications to the system users that you configure to get them. There are much more functionalities that can be added to the App according to your requirements.