How to use "Download Email" - from Office 365 Activities

I’m trying to save a particular email, retrieved earlier, but I have no idea how that activity should be configured, specifically the output, because I don’t know how to create that variable… with the name… the path… the two together… The UiPath help page of the activity does not help me much… could someone help me?

Put your cursor into the Downloaded email box, press CTRL+K, type a name for the variable, press Enter. This creates the variable with the correct datatype for you. All activities/properties work this way.