I wish the SEA had, file attachment linking. User attaches a file to an email, and the attachment is replaced with a URL back to it. Very nice. The issue, while a PDF problem and not a SEA one, is trying to get to an attachment in an SPX PDF is horrendous on a good day, assuming a basic computer / mobile device user. No way our clients could do it and many of the are MDs. Then back late last year, Adobe disabled all attachments sent in PDF. So that caused us a lot of trouble which brought us to Synametrics (http://web.synametrics.com/SynaMan.htm) file attachment linking feature.