Compress the file size of a picture

1. In the email message you are composing, select the picture you want to compress.

2. On the ribbon, select the Picture Format tab, then select   Compress Pictures near the left end. 

   If you don't see the Picture Format tab on the ribbon, make sure the picture in your message is selected.

   If you don't see Compress Pictures on the tab, near the right end, select  More commands, then select Compress Pictures. 

3. Choose the resolution you want to use.

4. Select whether compression should only apply to the selected picture, then select OK.

To learn more about changing a picture size, see Resize a picture in a message.