Properly getting annoyed that all my personal chats are now held to ransom: Unlock all your team’s hidden messages and files PRO On the free version of Slack, messages and files older than 90 days are hidden. "hidden" ... little f*ck*rz!

Yep

I've started copy-pasting threads to markdown to archive them

While we don't have a good way to preserve DMs, Mariano and Kartik are both keeping their archiving projects alive.

Cool. Anyway I've started using something like

xclip -selection c -o -t text/html

and

pandoc ... -t gfm-raw_html -o

to copy-out stuff into *.md files.

At least for my tool, "full history" above is just "full public history", unfortunately. Each of us is on our own for private channel/DM history. This predates Slack by 20 years, but I've always saved a local copy of everything I've ever typed into a browser textarea. I find it a useful practice even beyond data archival: copying text some time later often nudges me to think again about a conversation. More broadly I'm a huge user of copy/paste (whether scripted or not). The ultimate archival tool!

@Kartik Agaram Do you use an add-on to automatically archive text area content...? Or do you mean you write first in separate text editor, save to file, then paste in the browser...?

I compose in the browser. My reflex is to hit the copy shortcut right before I hit submit.