Slack¶

Connect Slack so conversation threads and whole-channel history—not just static docs—can be part of what Mention learns from. This helps when decisions and explanations live in channel discussions.

What gets synced¶

Slack produces two kinds of assets:

Conversations — individual threads captured on demand (see below). Each item represents a conversation identified by its channel and thread.
Documents — channel history. When you select a channel for export, Mention reads its message history (including thread replies), groups it into date-ranged chunks, and ingests each chunk as a Document asset. This is how you bring a channel's accumulated knowledge in wholesale, rather than one thread at a time.

The same thread can appear both as a captured Conversation and inside a channel-history Document — this overlap is expected and harmless.

Capture threads on demand (Conversations)¶

Bring specific threads in on demand: use the explicit command @Mention capture (or @Mention save) inside a thread you want captured, or open any message's shortcut menu (the "more actions" ⋯ menu on a message) and choose Save to Mention. Either way lets you add context selectively without importing everything.

A bare @Mention with no command no longer captures the thread — it replies with a short help message instead, so capturing and asking never get confused.

Export channel history (Documents)¶

In the web app, go to Sources → Slack → Inactive to open the channel picker. Pick the public or private channels whose history you want exported (private channels need the Mention bot invited first; the picker flags channels it isn't a member of). Selecting channels starts a background export per channel; the resulting Document chunks appear as inactive assets grouped under a #channel folder, so you can review them before activating. Activate a whole channel (the folder) or individual chunks to start ingesting them. Only public and private channels are listed — Mention never reads direct messages or group DMs. Each daily sync extends the latest (open) chunk with new messages and reflects edits and deletions in it; older sealed chunks stay fixed.

Ask Mention in Slack¶

Once Slack is connected, members can ask grounded questions without leaving Slack. Answers come from your organization's knowledge, the same source as the web app's Q&A and the MCP ask tool.

Open the Mention assistant — open the Mention app to chat with it in a dedicated assistant pane. When you open it, Mention shows a few suggested prompts to get you started; while it works on your question you'll see a native "is thinking…" indicator, and each answer comes with 👍 / 👎 feedback buttons so you can tell us whether it helped.
Direct message the Mention app with any question — the answer is posted back in the DM.
/mention <question> in any channel — the answer is shown only to you, so it's handy for a quick private question even in channels Mention hasn't been added to.
@Mention <question> in a channel thread — the answer is posted in-thread for everyone. The ask keyword is optional, so @Mention ask <question> works the same way.
A dedicated Q&A channel (optional): your admin can designate one channel where every top-level message is treated as a question—no @Mention or /mention needed. Just post your question and the answer follows in-thread. Replies inside an existing thread are left alone, so ongoing discussion isn't interrupted. (Questions in other channels still need @Mention or /mention.)

Ask follow-up questions in a thread. When you reply to a Mention answer by mentioning the bot again in the same thread (@Mention <follow-up>), it reads the earlier messages in that thread as context — so a follow-up like "what about its pricing?" resolves against what was already discussed, instead of starting from scratch. Direct messages and /mention answer each question on its own.

Mention matches your Slack email to your Mention account. If your Slack email doesn't match a Mention member, the bot asks you to sign in. Answers draw on your organization's full knowledge — there's nothing to pick or configure before you ask.

Type @Mention help anytime for a reminder of these commands.

Q&A settings (admins)¶

Admins can configure the Slack Q&A behavior from the web app: go to Sources → Slack and open the Q&A settings tab. One setting is available:

Q&A channel — choose the dedicated Q&A channel from the dropdown, where every top-level message is treated as a question. Only channels the Mention bot has already been added to appear in the list, so invite the bot to the channel in Slack first, then use Refresh to pick it up. Select No Q&A channel to disable the dedicated channel.

Changes take effect within about a minute.

How to connect¶

Add Slack as a source in Mention.
Sign in to Slack and approve the app for the workspace you want to connect. The app asks for permission to post replies, run the Mention assistant pane, and handle the /mention command so it can answer questions and confirm captures. (Workspaces connected before these features shipped need to re-approve to grant them.)
During onboarding (or later under Sources → Slack → Inactive), pick the channels whose history you want exported as Documents.
Use @Mention capture in any thread you want captured, or pick Save to Mention from a message's shortcut (⋯) menu — captured threads are activated immediately as Conversation assets.

Your organization can connect one Slack workspace to Mention; if you need a different workspace, work with your admin to plan which one should be primary. Full steps: Connecting sources.

Things to know¶

Channel and app permissions in Slack determine what threads can be discovered or mentioned.
Treat highly sensitive channels carefully: only connect and activate what your security and compliance policies allow.
Speaker names and user info are used so who said what stays clear in imported threads, matching what Slack exposes to the connected app.

Sync behavior¶

Slack content is updated on a daily schedule like other integrations, and you can refresh manually when needed. Threads pulled in via @Mention capture or the Save to Mention message shortcut follow the product flow for near-term inclusion.

Activation limit¶

You can activate up to 2,000 conversation threads per Slack integration.