You can embed resized, hyperlinked images (max 5MB) into email with 2 ways:
First, click on the Camera icon in the Utility Toolbar and upload an image:
Second, Drag-and-drop them right into the Email Body:
Resize and hyperlink images with the Image Toolbar that appears when you hover over the images.
First, Attach files to your emails by clicking on the Paperclip Icon in the Utility Toolbar. Max 20MBs: