PayPal & Stripe (invoice collection)

A company collects invoice payments into its own PayPal or Stripe account. Both need the Billing / invoicing module.

Two different gateways

	Super Admin → Settings → PayPal / Stripe	Company → Settings → PayPal / Stripe
Who is paid	You (the platform)	The company
For	SaaS plan / addon checkout	Customer invoice payments
PayPal webhook	`/webhooks/paypal` (Webhook ID required — unsigned events are rejected)	`/pay/paypal/webhook` (capture is confirmed with PayPal; Webhook ID recommended)
Stripe webhook	Optional (Checkout return URL is enough)	`/pay/stripe/webhook` — session is loaded from Stripe; POST body is not trusted
Keys	Your REST / Stripe account	That company’s own keys — not inherited

PayPal and Stripe are not sidebar items. Super Admin and Company Admin both configure them under Settings.

Company PayPal

Add-ons Manager: PayPal Active.
Plan includes PayPal (and Billing / invoicing).
Company Admin → Settings → PayPal.
Enable the gateway. Mode: sandbox or live. Paste Client ID, Secret, optional Webhook ID, currency. Use Test connection.

Create the company PayPal app in your PayPal account. Optional webhook: https://your-domain.com/pay/paypal/webhook.

Company Stripe

Add-ons Manager: Stripe Active. Plan includes Stripe and Billing / invoicing.
Company Admin → Settings → Stripe.
Enable. Mode: sandbox/live. Publishable key, secret key, webhook secret, currency. Test connection.

Optional webhook: https://your-domain.com/pay/stripe/webhook.

How a customer pays an invoice

On an unpaid invoice, Desk shows Pay with PayPal / Pay with Stripe when that gateway is enabled. The same links go on the print page and in the invoice email to the customer. The customer can pay from a public link (no login required).

After a successful payment, the invoice is marked paid and a payment row is stored. You can still record a manual payment under Billing → Payments.