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 Skeptic
Channels with threads as the first-class organizing model are well evidenced — browse-and-join, pinning, moving threads between channels, archiving and unarchiving — but the only search statement I can find is marketing copy that discussions are 'findable', with nothing on scope, filters or how far back search reaches, and no statement of any history limit either way. Mentions, reactions and file previews go similarly unevidenced, so the eighteen-month-old decision may or may not be findable. A threading-first surface earns the middle of the range, not the score reserved for a searchable multi-year archive. 1 2 3 7