If you copy and paste pictures to the email you are writing, these pictures will become the attachments. To insert images in the message body, please follow the steps below:
Step 1: Click "Insert" tab from the Ribbon;
Step 2: Click "Pictures" from the "Insert" tab;
Step 3: Browser to the folder where the images are located;
Step 4: Select the image and click "Insert" at the bottom;
Step 5: The image is inserted to the message body. Repeat to insert more images.