FAQ: How can I add contacts to a Campaign via CSV?
Contacts can be added to a campaign without using the list builder.
Simply generate a CSV file that contains only the email addresses of those contacts you with to add to the campaign. These should be in column A and there should be nothing else in the CSV.
Access the IMPORT CSV option in ADMIN>DATA MANAGEMENT and select "Campaign CSV"
Select the campaign you wish to add the contacts to and choose the file to upload.
The file will upload and the contacts will be added.