If you are not sure how to create a Template Override or how to use it as Alternative Layout, you can check our FAQ first.
Since Joomla works with Bootstrap, the printer and e-mail icon do not display directly in templates. A pulldown button with the selection possibility shows instead.
But if you want to show the icons directly, you need to create a template override. There are many files that control the display of the print and e-mail icon in Joomla. For the "normal" article view you need to use the following code snippet: