MailChimp has a free add-on called Analytics360 that allows you to track how much revenue your email marketing generated on your site. We also offer a similar plugin called Ecommerce360 for carts like Magento, osCommerce, and Zencart. These plugins are really powerful because they don’t just automatically tag all your links so you can track stuff in Google Analytics. We actually pull data back out of Analytics and place it in your email marketing campaign reports.
All these stats are now available via the MailChimp API, so you can feed them into your company’s internal sales dashboard, and get that raise you deserve.