Foxit is not the File you will be handling. It is the tool you use to work with your PDF files, instead of using the Adobe product that works with your PDF files. You are never "sending Foxit;" you still are sending PDF files.

If ProSeries creates the PDF file, then there is nothing different here. The choice of which tool you use to open, view or Read PDF is yours. It's like the web browser. You might be using IE or Edge or Chrome or Firefox or Opera or Safari to browse the web. That doesn't change the internet. It changes your perspective, because you use a specific tool and someone else might be using a different tool for browsing.