Using the Bulk Actions features in your Contacts/Smart Lists section, you can perform multiple one-off actions to selected or all contacts. Here’s how to add or remove tags using the bulk action feature:
Step 1: Choose Your Contacts
Navigate to your contacts.
Check the box to select contact records.
You can also check the box at the top to select all on that page, and you can click the hyperlink to select all contacts in your system.