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 Compliance Counsel
Channels are categorised into organisation, team, external and personal with permission controls on every type, external collaboration keeps its data in a separate space, and the unified search reaches messages, users, channels and departments with tags to narrow results. I found no public information on threading behaviour, message edit history, pinned items or any documented history limit, and the detailed export mechanics in the captured pages belong to Zoho Mail rather than to conversations. An archive whose long-term limits are unstated is exactly what I will later be asked to produce. 2 3 7