Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
If the image is in your Photos app, you can get to it by tapping the little Apple/"A" icon, then the Photos icon. If it's on your Mac disk, from the menu bar tap Conversations, then Send file.
 
right-click/Control-click in the text entry field. 'Import Image' from the context menu. This opens a 'Select a camera or a scanner' dialog. However, it doesn't give you access to a file browser.
 
Last edited:
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.