iCloud: Print email
You can print messages when using Mail on iCloud.com if you want a physical copy for future reference.
Select or open the message you want to print.
By default, a short header (the information at the top of the email) with the email’s sender, recipient, and date is displayed.
To print the message with all of the message details in the header, click More (located to the right of the message’s From field).
Click the Action pop-up menu in the sidebar, then choose Print.