You can email the invoice to your customer and your customer can pay the invoice from the preview screen.
1. Login to the InvoiceASAP Manage Account website (www.invoiceasap.com > Login)
2. Click 'Invoices'.
3. Look for the 'View' column.
4. Click on the invoice number.
5. This will open the invoice in another window. Here you or your customer can type in their credit card information when viewing the invoice.