Exclusion Lists help you exclude leads/companies from Smart Lists. While adding leads/companies to a Smart List from their Insights page, you can apply an Exclusion List and keep the leads/companies you don't want to see out of the picture.
Let’s see how you can use a Company Exclusion List on the Leads page on the Discovery tab.
Using Company Exclusion List
Click on the Discover tab on your navigation bar. Once here, click on Companies to toggle the tab to Companies.
Once you’re in the Company tab, select your filters, and then your preferred Companies. Then, click on Add to list.
Select a smart list from the drop down you’d like to add these Companies to.
Click on the check box that says Select Exclusion List and add an Exclusion List. Next, click Add.
And you’re done! If you click on the Lists tab, you now have your Smart List and the companies in the Exclusion List have been excluded.