Reduce Slack costs without losing access.
On a typical 120-person Slack workspace, SeatMap.AI finds ~34 ghost seats — $425/mo · $5,100/yr — that you're paying for and nobody is using.
How SeatMap.AI flags a ghost Slack seat
- No login in 30+ days
- 0 messages sent last 60 days
- Account deactivated in HRIS
Slack alternatives compared
If your audit shows Slack is over-licensed for what you use, these are common downgrade or replacement targets.
| Tool | Per seat / mo | Notes | Savings vs Slack |
|---|---|---|---|
| Slack | $13 | Your current bill | — |
| Microsoft Teams | $4 | Bundled with M365 Business Basic | +$12,240/yr |
| Discord | $0 | Free tier covers most async use | +$18,000/yr |
| Mattermost | $10 | Self-host option, no per-seat ceiling on free | +$3,600/yr |
Savings assume swapping 120 seats. The smarter play is usually to keep Slack for active users and reclaim the dead seats — that's what SeatMap.AI does.
Frequently asked
How much can I save by reclaiming inactive Slack seats?
On a 120-person team paying $12.50/seat, a typical 28% inactivity rate means ~34 ghost seats — about $5,100/year recovered the moment they're deactivated.
Will deactivating a Slack user delete their messages?
No. Deactivating preserves message history and channel context. The seat stops billing and the user can be reactivated later if needed.
Can I downgrade Slack instead of revoking seats?
Yes, but downgrading the workspace tier loses features for everyone. Revoking ghost seats keeps your active users on the right plan and only removes the dead weight.
Run a real Slack audit in 90 seconds
Read-only OAuth. No agents, no installs. The first audit is free — keep the savings whether you sign up or not.