Eric,
I did remember to select the error process, at least I'm quite sure, I already changed it by now.
But your other question: I don't really know which information to expect. I added a 'send to folder' in the error process so I would see what information I would get, but nothing happened.
For example: I figured the 'HTTP client input' could generate a 404 error just like browser would do, or just the error message from my screenshot. I don't really mind what I get, PP can probably handle it anyway
But can I achieve what I want? So when the website is down, the 'HTTP client input' would generate an error so that I get an email?