Publish a Never expires invitation
- In the support Slack workspace, open Invite people → Edit link settings and select Never expires. Copy the resulting shared invitation.
- Open the link and verify the correct support workspace. Paste it into Slack community invitation, confirm the workspace and Never expires, choose the alert channel and save.
- In Slack’s Admin → Workspace settings → People → Invitations → Invite links, read how many people joined through this exact link. Expand Record an invitation check in the app, enter that count and record the verified result.
Capacity and alerts
Slack permits up to 400 people per shared link. The default threshold is 350, leaving room to replace it before it fills. See Slack’s invitation limits. The app counts distinct new human workspace members from signed Slack join events. Retries count once, channel joins do not count, and unrelated settings saves do not reset the counter. Pausing the onboarding button does not stop counting people who join through a previously shared link. Publishing a different link starts a new count; recording Slack’s actual use count establishes a fresh baseline. Existing member identities are not counted again after a replacement. This is a new-member estimate, not a count of repeat admissions; Slack’s per-link usage remains the source for replacement decisions. Estimated uses combines that baseline with subsequent new workspace members. Slack’s join event does not identify the invitation used: other invitations may overcount, and missed events may undercount. A weekly browser check reconciles the estimate with Slack’s actual per-link count. If new members arrive while staff record a count, reload and check Slack again before saving. The estimate triggers a capacity warning; it never disables a working link on its own. A confirmed count of 400, or an explicitly broken/deactivated link, withholds the invitation from Operators until a working replacement is published.
The app evaluates capacity and availability every hour. Alerts repeat at most daily
for the same issue; failed deliveries retry hourly. Alert needs attention shows
failures, and Last alert accepted by Slack records an acknowledged send. No
invitation URL or client information is included in alerts.

