You can download and install Print for Trial free. The current version is 2.0.13.00 (5-April-2021).
Once installed PfT will run in evaluation mode. You will be able to select one or more emails and click the PfT button so you can try it out. However you will only be able to actually print the cover page and the first message. Once you pay and register these restrictions are removed.
PfT will work with all desktop versions of Outlook for Windows from Outlook 2007 onwards. It will not work with Outlook for the Mac or the web page version of Outlook.
The link above downloads and runs a small pre-installer. This checks for the right level of permission and downloads and runs the Microsoft Installer file (MSI). Network Managers and others may prefer to download the MSI by itself.
See version history
If you have problems installing or PfT does not appear on your Outlook ribbon then look here.