I love Hubspot. Especially, for small businesses that can leverage the Hubspot CRM and Marketing Automation features from a single, affordable solution. I, as I encourage my clients, follow their blog as it always has good, educational information for Marketers. As I am always on the lookout for examples of high-quality work, I was happy to see they recently published a list of the top 15 Email Marketing Campaigns of the year.
I especially like the Mom and Dad Money (#5 in the list) example because it shows how easy it is for small businesses to do basic customer insights gathering (which is so, so important) from an email campaign with little to no fancy email graphics. Check it out and see which one(s) you like the best.