Compressing photos for emails

I am finding the new outlook much less user friendly than the old hotmail.  My biggest issue has been with inserting photos.  The old hotmail let me select whether I wanted my large files (all over 5MB) to be reduced to small, medium, or large when inserting in the email.  I don't get that option when I insert the photos on outlook, so people with limited space cannot recieve the photos.  Also, when I recieve an email with pictures, and I click on the icons to view, I can no longer view the slideshow, I only see a black box with no photo inside.  Help please!