Select a note, or create one.
Each row becomes one note with every column as a front-matter field. If the CSV has a vault column, one folder is created per Proton vault; otherwise notes go into the folder below, sorted into type subfolders.
Create in folder:
Create in folder:
Any address at your domains works — the catch-all receiver accepts it, no setup needed.
Move to folder:
Move folder to vault:
Export downloads this vault as a CSV file — the same format the importer reads, so a vault round-trips.