Selecting this checkbox sends the invoice or statement data to a Web site
where your customer can pay it online. Your e-mail message to the
customer will contain a direct link to the Web site. To pay, all your customer
has to do is click the link.
If you have not yet signed up to receive payment through Billing Solution for QuickBooks, QuickBooks gives you an opportunity when you first click the Allow online payment checkbox.
If you have signed up to receive payment through Billing Solution but do not want this particular customer to pay you online, clear the checkbox.