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

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Go to contact tags page. Locate tag and click Upload CSV.

 

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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 tag. It will not create new contacts and will skip suppressed contacts.

 

Using Bulk Actions

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