Open the email template (when you click on the link or image below, the template will automatically open in a new browser tab)
Take your cursor and click on any part of the email template
Hit ⌘ + A (or control + A for Windows) to ‘select all’ of the template
Hit ⌘ + C (or control + C for Windows) to ‘copy’ the template
Go to your email client and start/compose a new email message and hit ⌘ + V (or control + V for Windows) to ‘paste’ the template in the body of your new email