Can I mark an invoice as sent without actually sending the invoice?
Harpoon automatically gives an invoice a status of Sent when you send an invoice to a client using the Send action on an invoice’s Invoice Details screen.
But sometimes you might want to mark an invoice as having been sent even if you didn’t send it via Harpoon’s interface. Harpoon allows you to manually mark an invoice as Sent by clicking on the Mark as Sent action from the invoice’s Action menu. The Action menu can be found on the main Invoices screen next to each invoice in the list, or via each invoice's Invoice Details screen.
Note: You’ll only see the Mark as Sent action available for Draft invoices.
To learn more about invoicing visit the Invoices support articles.