Another #deltachat release highlight that we didn't tell about yet: De-duplication of attachments and media files. De-duplication means that if you share a larger file to multiple chats, it will only ever exist once in each sending and receiving device's storage.
Same for #webxdc apps -- so if you use the 650KB big "v86emu" app running 32-bit ISO images, it will also only exist once in storage, even if each instance in a chat creates its own realtime LAN. Mini-tutorial https://chaos.social/@delta/114161626183191989