“Finally, repurposed content allows you to maximize your efforts through cross promotion. For example, in a paid post on Facebook you can link to the full blog or to an optimized landing page to optimize conversions and increase traffic to your website.”
Use email as a chance for cross promotion. Emails containing links to new Facebook pages, special landing pages containing sale or discount information, or those all about your latest blog post are merely some examples. Cross promotion is a great way to reuse content.