The sandbox is a practice copy of your dashboard: your plans, campaigns and discounts, plus a handful of sample customers. Everything you do there stays in the sandbox — no real customer is billed, no real line is switched, and the notifications it would send land in a simulated outbox.
Only your admin account can use the sandbox. All your admins share the same sandbox, and it stays as you left it between visits. Developers testing the API: see API sandbox.

Enter and leave

1

Enter

Press Enter sandbox at the bottom of the sidebar. You land on Home, and a yellow Sandbox mode banner shows the simulated date (Sim clock).
The Enter sandbox button in the sidebar

Enter sandbox, at the bottom of the sidebar

2

Work as usual

Every page now shows sandbox data — Customers, Subscriptions, Invoices, Plans and the rest. The sidebar button reads Sandbox active — open panel.
3

Leave

Press Exit sandbox in the banner. You are back on your real data. Signing out leaves the sandbox too: the next sign-in on this browser starts on real data.

What is in the sandbox

  • Your catalog, copied: plan versions with their add-ons, included services and badges, plus your campaigns and discounts, as they were when the sandbox was created or last reset. The services are copies too: editing one in the sandbox never changes your real one. Later changes to your real catalog arrive with the next Reset sandbox. Your live plans’ names and descriptions can’t be changed in the sandbox — add versions to them, or create a new plan, which stays in the sandbox. A live plan keeps its own campaign; the sandbox’s copies of your campaigns and discounts can be edited there and linked to new versions and sandbox plans. Kurnl’s operator discounts are not mirrored into the sandbox.
  • Sample customers: up to four (Ava Sample, Ben Demo, Chloe Test, Dan Sandbox), each with an active service on one of your plans and a line on a simulated switch, plus one pending install.
  • Simulated buildings and switches. No real hardware is ever touched.

The sandbox panel

Open it with Panel in the banner. It has four cards.
The sandbox panel with clock, invoices and outbox

The sandbox panel after a month of simulated time

Simulation clock

The sandbox’s date is frozen — it only moves when you press +1 day, +7 days or +30 days. Each simulated day runs that day’s billing and payment collection in order. Sample customers are billed on days 1 to 10 of a month, so invoices appear once the clock has passed those days.

Invoices

Payments succeed automatically on the due date. To see what happens when one fails, press Bounce payment on an invoice, then fast-forward: after your grace period the service is suspended, and the invoice turns overdue. Mark recovered pays it and restores the service.

Network

The simulated lines of the sample customers. Take down a line to see the outage alert — it also appears under Alerts and in Home’s needs-attention list — and Bring up to restore it.

Simulated outbox

Every message the sandbox would have sent. That is the simulated invoices, receipts, failed payments, suspension notices and outage alerts, and every e-mail and text to a sandbox customer: automation messages, ticket replies, portal invitations, sign-in codes and campaigns. Each row says how it would have gone out and to whom. Nothing here reaches a real inbox or phone, not even an address or number you typed in yourself.
A bounced invoice and the outbox in the sandbox panel

A bounced payment and the notifications it produced

Start over

  • Reset clock sets the clock back to today. Invoices and notifications you already generated stay.
  • Reset sandbox wipes all simulated invoices, notifications and sample customers, copies your current catalog again, creates fresh sample customers and sets the clock back to today. Plans and versions you created in the sandbox stay. Confirm with Reset.
A good first run: enter the sandbox, open the panel, press +30 days, bounce one payment and press +30 days again — you see the whole path from invoice to suspension. To practise the everyday flows, see Add a customer & subscription and Build your catalog.