How to open images in my email sent to me on an iphone (via email)?

Someone sent me images to my email via their iphone. I can't open the images. How can I open them, using a computer to open the email/images?

Unless they are sent in an attachment you can only open with computer. Or maybe see if you can get an app like a photo viewer or something. I've got falcon player but not sure if it enables you to view photos