After you've collected emails through features like 'Newsletter Sign-up', '.mp3 in Exchange for Email', or using a 'pop-up' page, your fan list will show up in your back-end. You can access this by going to Promote > Fans > Export. To the left of the export button you can choose which kind of file you'd like to have your export formatted in.

After downloading you will have your export will be in your computer and ready to import into mail programs like MailChimp or Campaign Monitor or keep as a backup. 

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