I am using Windows Live Mail.  I want to attach of send a picture (JPG) at a reduced size, but the pictures always seem to be sent as a .png file.  The resolution-size of this file is not good at all and the recipient cannot zoom in to see any detail.  How can I send a picture (JPG) at a greater size, but not full size.  I have also tried sending as an attachment which is full size, but this always fails.