Hi @B1nuzz
Unfortunately it’s not possible to change the names of the PDFs that are generated, although you may wish to add your vote to this topic.
Is there anything we could help with to enable you to send them from within your QuickFile account? If you send them there, you have a log of it being sent, and if you send a link rather than a PDF, then it also records when they’ve viewed the invoice which can be useful for when you chase payment.