I wrote a blog post two weeks ago that described a problem with the Email Ticket Information button when contacts were imported into SalesLogix 7.5.  That issue was found in the LAN client.  Here is a similar issue we found in the Web Client.  If the contacts are imported and the DoNotEmail, DoNotSolicit, DoNotFax, DoNotMail, and DoNotPhone fields in the contact table do not contain a 'F' or 'T' value then the Email Address for those contacts as well as the DoNot fields will appear inactive.  We ran a simple script to update those values to correct the issue.