Partially, yes. In the sense that, while you can display the sent newsletters on your Newsletters website page, the newsletters do not have all the features of a blog. People will be able to read your newsletters, but they will not be able to rate, comment or use an RSS feed.
If these blog functionalities are important for you, then you may consider using an external blog site, that you can link in the menu of your Coaches Console website.
You can archive your newsletters like a blog under a menu entitled “newsletters” where visitors can get a taste of your services, style and brilliance!