PureMessage 4 How to change the URL?

Dear all,

I would like to change the URL in the quarantine digest email. I found a topic about doing this for PureMessage 3.x using the PureMessage Support Tools, but nothing regarding the version 4.x:

http://www.sophos.com/en-us/support/knowledgebase/50520.aspx

Should I use the same tools? Is there a version for PureMessage 4? Is there a different way for editing the url?

Many thanks for your help,

Fred