You can use a seed list with your one-time or recurring campaigns. A seed list allows a marketer to upload a list of users (like internal users), and subsequently receive a copy of a message to each user in the seed list. The email will reflect the content sent to the first user in the campaign.

1. Follow the same Customer List setup process but select "Seed list" as the option.

2. Associate the Seed list to use with the campaign under advanced setting.