First, log into the Manage Account Website at http://invoiceasap.com > Log In
Next click on Invoices on the left navigation.
Limit the number of invoices by date range (optional).
In this example, I am setting the date range to be last year. Apply.
Scroll to the bottom of the Invoice list and click Show All.
At the top of the screen, click on the checkbox to select all invoices.
Then click the Delete button.
Confirm the delete.
If you have a lot of invoices to delete, the screen will gray and a spinner appears.
Be patient while InvoiceASAP deletes the invoices.
The more invoices there are, the longer it will take.
When the delete process has finished, the screen refreshes.
All invoices are gone.