Image cannot see by email receiver

Hello,
i am having a problem trying to send a number of photo images in the body of the e-mail. I am using g-mail and sending to another my friends mail account like yahoo,gmail,rediff. I just copy and paste the image into gmail but when I send the mail, the reciever can see only the text of the message but cannot see the image although they can see a box with an x in the top left hand corner in the place where the image should be. but when I try to send the image I get an error saying the document contains no data. I checked the location of image to see if it was a link or not saved at all but it seems fine.
can u please solved the proglem

thanks

jai