Show HN: I built a newsletter platform that lets you write the issues on Notion

Hey everyone!<p>I&#x27;m Raz, the creator of Notocat and I&#x27;m excited to share that I just launched my new product and it&#x27;s live for everyone to use.<p>The product started as a Notion to email HTML renderer that I was using for my other business. Then I saw the opportunity to reshape this as an entire product, and Notocat is the result of all the work.<p>It comes with a lot of features that you&#x27;d expect from a newsletter platform, including: - Advanced issues customization - Custom and embeddable subscribe forms - Custom domains - Opens &amp; Links tracking - Contacts API - Best-in-class deliverability<p>Really happy to receive feedback, so please let me know if there is anything you&#x27;d like to share!

So how do services that interface on top of Notion work? Do users have to pay fees to Notion for extra blocks of content (or however Notion charges) on top of what they pay to whichever service? Is there a strategy in case Notion folds? Are these type of services marketed more toward people who already use Notion to begin with?