This method will guide you to print the message body of an email only excluding its message header with the help of the Reply feature in Outlook. Please do as follows:

1. Select the email you will print without header, and click Home > Reply.

2. Now the Reply Message window is opening. Please remove information as following screenshot shown:
(1) Remove the recipients, subject, attachments from the message header;
(2) Remove the replying header at the top of message body.

3. Click File > Print. And now you will see the entire message header does not appear in the print preview. See screenshot below:

4. Go ahead to specify a printer as you need, and then click the Print button. See screenshot above:

5. Close the Reply Message window without saving the email.

Easily print an email without message header and username, but including background image 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 do not want to print the message header during printing, please do it as following:

1. Double click to open the email you will print in the Message window.

2. Click Message > Actions > View in Browser.

3. A warning dialog box pops up. Please click the OK button.

4. The email message will display as a web page in your default web browser. Please click File > Print (or press Ctrl + P keys) to open the Print dialog box.

5. In the Print dialog box, please select and configure your printer, and then click the Print button.
Note: This method works well for HTML emails. If your email is Plain Text or Rich Text, you need to convert it to HTML before printing. You can convert emails to HTML (as below screenshot shown): (1) Double click to open the email; (2) Click Message > Actions > Edit Message; (3) Click Format Text > HTML. And then follow the same steps we described above to print the email without header.

If you have Kutools for Outlook installed, you can apply its Print feature to easily print the message body of an email only without its message header in Outlook. Please do as follows:

1. In the Mail view, open the mail folder containing the email you will print without header, select this email, and click Kutools Plus > Advanced Print. See screenshot:

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

3. In the new Print dialog box, please specify the printer and click the Print button.

And now only the message body of the selected email is printed out.