XML file attached to email with PDF?

Hi there,

I am using phantomjs locally and have the option ticked to attach the PDF for a quote/invoice to the email being sent.

This works normally, however in addition to a PDF file being attached there is also a .XML file with the same name (eg. Quote000).

What is this XML file attached for and is there a way to stop this from being sent as an attachment alongside the PDF?

Figured this out, unticked “Attach UBL” in email settings. Oops!