Is there a way to programmatically upload to SharePoint all the invoices related to my tenant (M365, Azure) with all facts like amount, vat? I have a manual process now, but it would be great if I could skip this monhly task. E-mail + Power automate solves half of the problem, the upload.
If your invoices are of a consistent format (formatting of the invoice is the same), take a look at SharePoint Syntex which can extract the contents of say the company invoiced, amount, and so forth and add it to a Document Library column.
You would still need to take the emailed invoices and use Power Automate to place it in the proper library, of course.