Emailing Images Viewable in Email Body in Outlook

To give an email extra punch, I created a page in Pages, saved it as a pdf, opened it in Preview, saved that image as a JPEG, then added it as an attachment to an email and saved the mailing as stationery.

I want the image to appear in the body of the email, and not just as an attachment. Many of the recipients will be using Outlook.

I've sent test messages, and often the recipient can only see the emailed image as an attachment, not in the body of the received email.

Any suggestions?

Thanks for any help you can provide.