What is the meaning of the word "pod" here?
This is a good tactic to balance out a particular salesly email. So, if you've linked to a product page with one email pod, why not feature a YouTube video in another.
The free dictionary made put the idea in my head that perhaps the author uses it on the analogy with peas or beans pod. But I want to be sure. http://www.thefreedictionary.com/pod