In this video, we learn how to send documents for review by email in Acrobat 9 Pro. First, go to the comment button and choose "attach for e-mail review". A wizard will now open with an e-mail based review. Anyone who has Adobe will be able to open this up. Use a PDF file that you want to use, then click "next" and invite your reviewers by typing in their e-mail addresses or finding them in your address book. Then, add in the subject and send the e-mail. From here, the document will send and you're finished!