I have written a huge amount of articles for Clean Email all about how to use different emailing services, hacks, tips and tricks.
Although I mostly specialise in lifestyle, health and wellness content, these articles show examples of my writing. For each of these articles I researched the topics, learnt all about email (surprisingly still not an expert with email, however) made sure each piece of content was SEO-friendly, edited each piece and voila.
(Screenshot snippets of page/example post)