Please follow below method to print an email in landscape or portrait orientation in Outlook.

1. Shift to Mail view, open a mail folder, click to highlight the email you will print in the mail list, and click File > Print.

2. And now please specify the proper printer from the Printer drop down list, and click the Print Options button. See screenshot:

3. In the opening Print dialog box, please click the Page Setup button.

4. And now the Page Setup dialog box comes out. Please go to the Paper tab, check the Portrait option or Landscape option as you need in the Orientation section, and click the OK button. See screenshot:

5. Go ahead to click the Print button in the Print dialog box.

Note: Microsoft Outlook will save the print settings and apply to later printings automatically.

Easily print an email' message body only without header and username in Outlook

As you know, when printing an email in Outlook, it will print out both of email header and email body as what you view in the Message window or Reading Pane. What's more, it usually adds your username above the message header. Here, I want to introduce the excellent Advanced Print feature of Kutools for Outlook, which enables you to print an email' message body only without the message header and username, and remaining the background image in Outlook.

If you have Kutools for Outlook installed, you can apply its Advanced Print feature to print the message body of an email only in landscape or in portrait in Outlook easily.

1. In the Mail view, select the email whose message body you will print in landscape/portrait, and click Kutools Plus > Advanced Print. See screenshot:

2. In the opening Advanced Print dialog box, only check the Item body option in the Print Content section, and click the Preview button. See screenshot:

3. Now in the Print Preview dialog box, click the Landscape button  or Portrait button  as you need, and then click the Print button. See screenshot:

4. In the Print dialog box, please specify a printer, and click the Print button.

And now the selected email’ message body is being printed out in landscape or portrait as you specified.

Print distribution list (contact group) on one page in Outlook

Print list of emails or email subjects in Outlook

Print global address list (address book) in Outlook

Print task list or to-do list in Outlook