Mailskinner.exe mystery solved.

It seems that the MailSkinner application is an application to add cute icons to your mails. It is available from here: http://www.mailskinner.com/. Thanks Orion for the tip!

Nevertheless, I've seen reports that it is difficult to remove and might hang your Outlook. So maybe you should avoid this application after all.

I've updated the entry in the process information database so that everyone searching for it finds the info.