if you don't want to attach a image file(jpeg,gif,bmp etc.) in your mail(text body).
Then you can paste your image in text body without any attachment. copy paste process is given below.
1. Right click on image file
2. choose open with internet explorer.
3. or Choose program... then choose internet explorer.
4. Press enter key or click on ok button.
5. In internet explorer(browser window) right click on image and copy image.
6. after this paste image in your(Gmail, Yahoo etc.) mail box tex body.
7. Do practical right now and send mail without image attachement.