Or....with
PS already open.
Click in the atachment thumbnail to open it.
On the full-size image, click and hold. Slide the image to the toolbar over where it is showing
PS (keep holding) - this will open
PS. Slide to the
PS background and now let go.
This is the quickest way
(that I know) to get the image to
PS.
(downside is that you'll lose the original name - it becomes just "attachment", and you don't have a saved copy)
Rô