Hi Allyson,
Mike here, let me explain how the “attachments” work in the CRM, and what is available via the Portal.
Firstly, customers and invoices have always had the ability to attach files to them, this is to cover the scenario where you may (as a CRM team member) want to attach additional info to the invoice (such as the Quote PDF). The same goes for the contact, the ability to attach key information (and optionally, allow them to download the files)
As for actual files being available to the customer for them to download, yes this is part of Client Portal Pro, which on its own is $79 a year (under $7 a month, equivalent), some CRMs (not naming names, run into the $2k per month range).
It’s intended for example, photographers wanting to put example photos up so a Client could see, or a web designer to share initial mock ups, etc. You could also use it for your Nota Fiscal on their portal under “key documents”
What could work for you, if c$7 a month is too expensive, would be to edit the Invoice Email so that it sends a publically available link to your Nota Fiscal document (which they’d access from the link).
Mike