Slack Guest Accounts

Guest accounts give people outside your organization controlled access to specific parts of your Slack workspace. Contractors, freelancers, external consultants, and temporary collaborators can participate in relevant channels without seeing sensitive internal information or gaining full member capabilities.

Why Use Guest Accounts Instead of Full Membership

FULL MEMBER ACCOUNT            GUEST ACCOUNT
──────────────────────────     ──────────────────────────────────────
Sees all public channels       Sees only assigned channels
Can browse member directory    Cannot see the full member list
Can create channels            Cannot create channels
Can install apps               Cannot install apps
Unlimited workspace access     Time-limited (set expiry date)
Counts as paid seat            Single-channel guests: often free
Best for: employees            Best for: contractors, clients,
                               temporary collaborators

Two Guest Types

Single-Channel Guest

A single-channel guest can only see and participate in one specific Slack channel. They cannot access any other channel, see the member directory, or browse the workspace. This is the most restricted guest type and is free on paid plans regardless of how many single-channel guests you invite.

SINGLE-CHANNEL GUEST VIEW

  Their Slack sidebar shows:

  ┌────────────────────────────────────┐
  │ Workspace: ACME Corp               │
  │                                    │
  │ CHANNELS                           │
  │  # proj-website-redesign ← ONLY    │
  │                           THIS     │
  │                                    │
  │ (nothing else visible)             │
  └────────────────────────────────────┘

Multi-Channel Guest

A multi-channel guest accesses two or more specific channels you choose. Each multi-channel guest counts as a paid seat (same cost as a full member on most plans). Use multi-channel guests when a contractor needs to participate in several channels but should not have full workspace access.

MULTI-CHANNEL GUEST VIEW

  Their Slack sidebar shows:

  CHANNELS
   # proj-website-redesign
   # design-assets
   # ext-feedback

  (Three specific channels — nothing else)

How to Invite a Guest

1. Go to workspace name → "Invite people".
2. Enter the guest's email address.
3. Under role, select "Guest".
4. Select "Single-channel" or "Multi-channel".
5. Choose the channel(s) they can access.
6. Set an expiry date (optional but strongly recommended).
7. Click Send Invitation.

Setting and Managing Expiry Dates

Expiry dates automatically deactivate a guest account when the chosen date arrives. This prevents accounts from lingering after a project ends.

EXPIRY DATE WORKFLOW

  Project ends: Dec 31
  Guest expiry: Dec 31
         ↓
  Jan 1: Account deactivated automatically
  Jan 1: Guest receives email notice
  Jan 1: Guest can no longer access Slack ✓

  No admin action required for cleanup ✓

Set expiry dates at the time of invitation. You can extend or shorten the expiry later from the Manage Members panel by clicking the three-dot menu next to the guest's name.

What Guests Can and Cannot Do

ACTION                         GUEST CAN    GUEST CANNOT
──────────────────────────────  ──────────   ──────────────────────────────
Post messages in their channels ✓            Post in other channels
React with emoji                ✓            See other channels exist
Reply in threads                ✓            Browse the member directory
Attach files                    ✓            Create new channels
Start a DM with channel members ✓ (limited) DM members outside their channel
Join a Huddle in their channel  ✓            Start workspace-level searches

Adjusting Guest Channel Access

If a guest needs access to an additional channel during a project, add them to it without changing their role:

1. Open the channel you want to add them to.
2. Click the member count or "Add people" in the channel header.
3. Type the guest's name and add them.

Note: Adding a second channel to a single-channel guest converts them to a multi-channel guest, which may affect billing.

Revoking Guest Access

Deactivate a guest account before their expiry if the project ends early or the relationship changes:

1. Open Manage Members.
2. Filter by Guests.
3. Click ⋯ next to the guest's name.
4. Select Deactivate account.

Plan Availability

PLAN           GUEST SUPPORT
────────────   ────────────────────────────────────────────────────
Free           No guest accounts supported
Pro            Single-channel guests (free); multi-channel (paid)
Business+      Both guest types supported with admin controls
Enterprise     Full guest support + compliance audit trail

Key Takeaways

• Guest accounts give external collaborators limited access to specific channels only.
• Single-channel guests see one channel only and are free on paid plans.
• Multi-channel guests access multiple chosen channels and count as a paid seat.
• Always set an expiry date when inviting guests to automate cleanup when projects end.
• Guest accounts require a paid Slack plan — free workspaces cannot use this feature.