One of the reasons that Dracula is one of my favorite epistolary novels is that it cares about the archive.
This isn’t just a set of letters and diaries put in order for the reader; it’s an archive that was made by the people in the story.
We get to see how the letters were found, who found them, who transcribed all the wax cylinders, and who kept the documents.
It’s a book that takes the role of the archivist and written documents seriously.