Duffel: Add a button to your Gmail to download email messages as a PDF (or set of PDFs) in one-click
Duffel is the only way to download your Gmail email messages as a PDF (or set of PDFs) with just one-click!
It works on it's own; just click "Add to Chrome", and then head over to Gmail.
You'll see the Download button anytime you're viewing an email thread.
You'll also see the Download button when you select any messages in your inbox, label, or any other area that shows more than one message.