In order for you to create a lead list, set your filters and click Search. Then, create a new list clicking on New List. Enter a name for the list and hit Create.
With this list, you will be able to mark as many positions as you want (or all of them) and then to get all of the selected emails, click on Get Contacts.
This way you will get a lot of contacts in a matter of minutes without the need to manually click to get email one by one.