One of the easiest ways to double your email subscribers. Integrates with MailChimp, Campaign Monitor, Constant Contact, and CSV.
If you don't have a Social Intents account, you can sign up right from the widget.
In the admin section of your WordPress site, click 'plugins' and then 'add new'
Search for 'Email List Builder by Social Intents'
Click 'Install Now'
After Installation, enter your widget key or Register for a new Account.