This post will test how WordPress support image posted by email.
I have a blog on blogger.com as well, which is fengnz.blogspot.com. I used to post some blogs by emails with images attached.
blogger.com works quite well. I have no idea about self-hosted WordPress.
The following is an image I captured on my screen and pasted to Gmail.
[image: Inline image 1]
Cool, a success testing. I can see the image I pasted into Gmail showing correctly. It showed as medium size thumbnail which you can click to navigate to see the full image (I modified it to full). This is similar to blogger.com. What blogger.com does is popping up a dialog to show the full image.
Another funny thing WordPress does is that it adding this line to the post:
[image: Inline image 1]