In Adobe Reader Touch,
- Oen a document that you want to share.
- Open the Charm.
- With Touch, swipe in from the right edge of the screen.
- With a mouse, point to the upper-right corner of the screen, then move the mouse down.
- Tap/click Share.
- Tap/click Mail. The currently viewed PDF file is already attached to your email.
- Add recipient(s).
- Add a subject.
- (Optional) Add a message.
- Tap/click the Send button in the upper-right corner of the pane.
(Click the images above to enlarge)