Module
Back-in-stock Notifications has no settings — only on/off in Settings → Modules.
Per product (product editor)
| Field | Choices |
|---|
| When out of stock | Just show "Out of stock" (default) — no buy button. Allow Buy in Advance / Pre-order — shoppers can still buy. Show "Notify me when available" — the waiting list (shopper button not available yet). |
Fixed behaviour
| What | Value |
|---|
| How often restocks are checked | Every 5 minutes |
| Emails per sign-up | One |
| Channel | Email only |
| Email wording | Fixed — it uses your store's email design but can't be edited in Settings → Communications → Email Templates yet |