Channels, threads & search
How this is scored
The daily surface: channel model, threading, mentions, files, and whether search can find a decision made eighteen months ago.
0 — Flat group chats with no threads; search covers recent messages only, and history is capped.
3 — Channels and direct messages with basic search, but threading is awkward or absent and file handling is a plain attachment list.
5 — Public and private channels, real threads, mentions and reactions, file sharing with previews, and full-text search across the whole history.
8 — Cross-organisation or guest channels with clear boundaries, message editing history, pinned and saved items, search with filters by channel, person and date, and a documented history limit or none at all.
10 — The archive is a working knowledge base: search that ranks well across years, threads that stay readable, channel lifecycle management (archive, rename, merge) without losing history, and export of a conversation in a form a human can read.
The Team Lead
Threads are the product here, not an afterthought: threads sit inside channels, can be pinned, moved between channels, and channels can be archived and browsed later rather than deleted, plus descriptions, color-coding and an inbox that gathers threads for prioritising. The only word on search is that channels and threads keep discussions "browsable and findable", and we found no public information on full-text search across the whole history, search filters, message editing history or a documented history cap — exactly the half that decides whether last spring's decision survives a busy Tuesday. 1 2 3 7