"Please note: This is for the Desendant Text report and most other UFTree reports. Email and attachments cannot handle the Indented Descendant Report or the Pedigree Report. The problem with those reports relates to the way email (or opening an attachment in an email window) deals with tabs. The fact is, any tabs used look fine on your screen but disappear at the receiving end. We also found that an attachment of the Indented Descendant Report shows indent errors after the first page. Later pages accumulate errors."
Have you tried to sip the indented descendant report before you attach it to an e-mail and unzip it at the receivein end? I believe this will solve the tab probelm.