You can upload CSV file with a single email column to bulk add/remove contacts from a list.

screenshot-2021.08.08-16_38_22.png
Go to contact lists page. Select list and click Upload CSV.

screenshot-2021.08.08-16_39_14.png
Specify if you want to Add Contacts or Remove Contacts. Attach CSV file with single email column and click Upload.

Keep in mind that CSV upload will only add/remove existing contacts from list. It will not create new contacts and will skip suppressed contacts.

 

Using Bulk Actions

Another way to bulk add/remove contacts from list is to use bulk actions.