# Quickstart: Participate in an email review

When you open the PDF attachment in an email review, a tracked copy of the PDF opens with a document message bar, a Send Comments button, and a Comment & Markup toolbar.

Important: If you’re prompted to connect to a server when you open the PDF, you’ve been invited to a shared review.

1. Open the PDF attachment from your email application.
2. Use commenting tools to add comments.
3. Save the PDF, and then click Send Comments.