QuickBooks

Two directions, both live. Projectous sends invoices to QuickBooks and picks up payments made against them. A payment recorded in QuickBooks against an invoice that came from Projectous, or was imported into it, appears on that invoice by itself, with its amount, date, method and reference number. It is recorded as a payment on the invoice; the invoice's status does not change by itself. A payment against an invoice Projectous does not have is left in QuickBooks until you import that invoice. And QuickBooks can be imported into Projectous: customers, invoices, payments and expenses, each previewed before anything is written. See How do I import from QuickBooks? for each step.

Connecting it is an authorisation step in Settings, under Money, which only an admin can open. It is part of the Everything plan.