A pillar of content and copywriting is to write as if you’re speaking to one single person at a time. This isn’t feasible with mass email marketing, but segmenting your list and messages helps attain the same sort of feeling. Email marketing segmentation transforms generic email into personalized and tailored messages more likely to resonate with your recipients.
The third and final stage requires the firm to set a budget and management systems; these must be measurable touchpoints, such as audience reached across all digital platforms. Furthermore, marketers must ensure the budget and management systems are integrating the paid, owned and earned media of the company.[68] The Action and final stage of planning also requires the company to set in place measurable content creation e.g. oral, visual or written online media.[69]

This article is informative, but it does not offer distinguishing features between the services covered (other than mailchimp is free). You seemed to go to great lengths to say good things about each – although I’m sure each services has positive aspects. I would have benefited much more from a rating of some sort of the various features of each service, or at least the pros & cons of each.
A blast furnace is used to create pig iron from iron ore. It is a large vertical chamber lined with refactory (heat resistant) material into which iron ore, lime and charcoal is dropped. The charcoal is burned, with the help of compressed air blowin into the bottom of the chamber via ducts called tuyere's. This generates enough heat for the charcoal to react with the iron ore, effectively stripping out the excess oxygen and leaving the iron behind. After the process has run for some time, the impure pig iron is drained from the bottom of the chamber. The pig iron gets its name from the grid of ducts the iron was drained into, because it resembed piglets suckling alongside the mother.

More recently, companies have sought to merge their advertising messages into editorial content or valuable services. Examples include Red Bull's Red Bull Media House streaming Felix Baumgartner's jump from space online, Coca-Cola's online magazines, and Nike's free applications for performance tracking.[18] Advertisers are also embracing social media[22][23] and mobile advertising; mobile ad spending has grown 90% each year from 2010 to 2013.[24]:13

Particular groups of customers can be targeted or even individuals. Offering individual customers special deals on merchandise and/or services on the customer's birthday, for instance, is one example of email marketing personalization. (A restaurant might send an email to customers on their birthday offering 50% off an entree,) Email marketing helps a business develop and maintain a relationship with a customer over time that hopefully results in increased sales and increased customer loyalty. 
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