You can add a link to your message which creates a print version of your message. You do this by adding a Special link with Insert / edit link. Choose Link to the print version. When someone clicks on the link, a PDF is opened in the browser. This can also be done in the preview of your message in the module Messages. You will then have the option to print the email yourself.
Spotler has no influence on how the PDF is displayed, how many pages your message consists of and where the ‘breaks’ are.