Removing adobe links from email

When you create an email through Sage the bottom of email says :

To view the attachment, you must have the Adobe® Reader® software installed on your computer. To get a free version of this software from Adobe, click here: http://www.adobe.com/support/downloads/main.html

I have a customer that has their security set so tight that they cannot receive emails with links in the body of the email. Is there a way to remove this without having to remember to do it every time I send them an invoice?

Thanks in advance,

George Frost