What is the perfect medium/site to publish semi-epistolary novella? It's about 60-70% narrative & 40-30% epistolary (includes chat and text messages, posts, letters & emails, newspaper clippings, etc)

Context: I am planning to publish a mystery novella that involves Cosmic Gaming Corporation. It is for the main reason that the corporation will have a major role in the Error Series. Is this a prequel? Not really but it will provide a huge context behind what happened to CGC+

Five decades preceding the events in The Fallen Sanctum. If y'all read TFS chapter 6, CGC was mentioned there. As i've said before there are huge changes in this revision. It will be diff. from the og plot I planned for the entire series and the persons involved also expanded.

To know more about the novella. It is entitled Loading Death and I will be updating this thread with teasers and character profiles. https://twitter.com/ypgcafe/status/1246393602273468418