Slack

What Slack actually is

Slack is a team chat tool that a lot of communities moved into because it was already open in a browser tab. It was never designed to sell memberships, run courses or host a feed. It's channels, threads, DMs and huddles. If your community is a conversation, Slack does conversation very well. If your community needs a front door, a paywall and a course library, Slack gives you none of those.

We checked Slack's pricing page and help centre on 26 October 2026. Here's what matters if you're putting a community in it.

Pricing (the trap is in the unit)

Read the unit. Every community platform in this directory charges you, the owner, a flat fee. Slack charges per active member. A 300-person community on Pro, paid monthly, is 300 × $8.75 = $2,625 a month, and under Slack's Fair Billing Policy you're billed for every member who's active, with prorated credits only when people go quiet. Slack was pricing for companies that pay for their employees. It was never pricing for a creator who wants 300 strangers to join.

There's a workaround a lot of community builders use, and Slack's help centre confirms the mechanics: on paid plans, Single-Channel Guests are free, and you can add up to five of them per paid member. Multi-Channel Guests are billed like full members. So the cheap pattern is a handful of paid seats plus a crowd of single-channel guests. The catch is in the name: those members get one channel. Your "community" becomes a single room.

Our pricing field shows $8.75, the cheapest paid plan at the shortest billing term, per user. Multiply it yourself.

Payments and courses: none

Slack has no way to charge members. No subscriptions, no tiers, no checkout. If you want a paid Slack community you pair it with a paywall layer that hands out invites after payment. Memberful is the usual partner and we've listed it in the Membership & Paywall Layers category. Courses, gamification and a content feed don't exist here either. Slack is the chat room; everything else lives somewhere else.

The free plan limits, from Slack's own page

• You can view and search messages and files from the last 90 days. Older ones are hidden to make room, and anything more than one year old is permanently deleted.
• Up to 10 third-party or custom apps.
• Slack may throttle you if you send a high volume of messages in a short period.

For a company this is an annoyance. For a community it's an eraser. Your best threads, the ones that made someone join, vanish from view after three months unless you pay per head.

Getting members in

There's no CSV upload. On every plan you invite by typing email addresses, or you share an invite link. Each invite link lasts 30 days and can be used by up to 400 people. If you're on a paid plan and want to use single-channel guests, invite them as guests and pick the one channel they get. Slack also warns that it may limit your invitations if you've sent many that weren't accepted, which is exactly the shape of a community launch.

If you're moving from another Slack workspace, Slack has an import tool that merges members, channels and messages from an export file. That's Slack-to-Slack only.

Getting your data out

This is where Slack is better than most chat tools, with one asymmetry.

• Member list: owners and admins can click "Export full member list" and get a CSV. Available on all plans.
• Messages: on all plans you can export messages and file links from public channels as JSON. Private channels and DMs are not in the export on Free or Pro. On Business+ you can apply for an all-conversations export and schedule weekly or monthly recurring exports.
• Free plan quirk: file links in the export only go back 90 days.

So you can leave Slack with your people and your public conversations. You can't easily leave with the private ones unless you're on Business+ and Slack approves the application.

Where it fits

Slack still makes sense in one scenario: a small, high-value group (a mastermind, a paid cohort, a client circle) where you're happy to pay per seat or use single-channel guests, and the members already live in Slack for work. In that case the "already open in a tab" advantage is real. For a public or growing community, the per-member bill and the 90-day free limit will push you out within a year.

Known limitation

Per-member billing on paid plans and a 90-day message history on the free plan. The two combine badly: the free plan erases your archive, and the paid plan charges you for every person who reads it.

Sources we checked

• Pricing: https://slack.com/pricing
• Usage limits for free workspaces: https://slack.com/help/articles/115002422943
• Export your workspace data: https://slack.com/help/articles/201658943
• Download a list of members: https://slack.com/help/articles/4405848563603
• Invite new members: https://slack.com/help/articles/201330256
• Guest roles and billing: https://slack.com/help/articles/202518103
• Fair Billing Policy: https://slack.com/help/articles/218915077
• Import from another Slack workspace: https://slack.com/help/articles/201748703