There is a very simple way that you can attach the exactly same picture to your mail and it takes up only few hundreds Kilo Bytes (KB) of the mail, which is about 5 to 6 times smaller size than using copy and paste method. So why not give it a try by following the guides below.
2. Go to Create -> Picture, window will pop up for you to select the picture file that you want to create from your Lotus Notes.
By having these extra 3 steps, your mail size can be reduced significantly.