Delete Outlook text when PDF is attached

How can I remove the added text when a PDF is attached to an Outlook email? I bought a bussiness licence just for this. and I can’t ask my users to remove that text everytime.

Right now a text like this is added below the email:

eMail created automatically by PDFCreator free
www pdfforge org

Thanks for your help,


You can find the answer here:

Best regards