Opt-In Downloads (formerly Subscribe & Download) is a plugin that allows you to distribute files by subscription. If people want to download something from your site or third-party sites, they must provide their contact details. After sending, they receive a download link by email. Very simple workflow. All submitted data is stored in a database and / or can be sent to popular email service providers such as MailChimp, iContact, GetResponse, etc. All stored data can be exported as a CSV file for use in any other newsletter systems. Opt-In Downloads is a great way to extend the functionality of your website.