One way I am trying to differentiate in terms of "Newsletter sending" is allowing users to send Newsletters not just of their posts. In other words, a Mailchimp/Convertkit functionality of sorts.

Other ways it differentiates is: Multiple blogs under a single account (same price) and lower pricing ($39/year at the time of this writing).

Stats (Newsletter and visits) is something I want to further advance and giving bloggers a way to monetize their blog without any fees (besides Stripe fees from connecting their account).