Re: QB InvoicingI noticed that the Attachments field does not actually get included in the invoice sent to the customer. Where are they able to view the attachment(s)?

Your customer can view the attachments you've included in your invoices below the subject line of the email, @passingthru.

You'll have to tick the Attach to email check box once you've attached the file successfully. This will enable the file to appear in the email you've sent. To do so, here's how:

1. Go to + New, then select Invoices.
2. Add the necessary details.
3. In the attachment field, drag or drop the files. 
4. Once done, tick the Attach to email checkbox.

You can read this article to learn more about recording customer-based payments: Record invoice payments in QuickBooks Online.

If you have further questions about where to view the attachments you've included in your invoices, don't hesitate to get back to this post. I always have your back.