Well you need to tell us what email program you are using its different for each one. But in my Hotmail I can't just use the print button from the browser, there is a specific print button in the email program to use to print the selected items in the email program. It looks like a little printer. To print every thing in the folder you may have to select all to highlight everything then the print option.

typically you cannot print just a "list" of emails, i.e., what your screen shows; your best bet might be a screen shot