I keep receiving them but can't send them myself :(

Wait, really? I've been able to send them, but none of the bottles I pick up ever have pictographs. I thought they just didn't work yet.

Same thing for me, I can send pictures but I haven't received any bottles with pictures in them. Only text and drawing messages

Yeah I found few pics, but they might've been old or something. I used the hackless pretendo method when I got them. (now I'm running it on aroma and seems like I can't get them anymore either, but I could send them now too)