@Bert:
First: nice avatar :-)!
The problem with third party services is that you have to trust them that they don’t do anything with the information of in the e-mails. Maybe they don’t but you don’t know. On most web hosting services PHP is already installed and so I was looking for a simple simple solution that turns form data into e-mails. Of course I could write that myself but I want to do as little as possible.