Honestly, I think you'd be better off with your checklist and a competent employee than trying to automate many of those things away to a third party who doesn't know what the project is supposed to do.
Sure, get in tools for things like dead link checking (no-one likes trawling through pages), but for most things it's going to depend on what the site does.
A service will only go so far as to make sure you don't have anything blatently wrong. In my experience, it's the non-blatent things that blow up the worst. Little green lights from a third party are nice and all, but you should still be verifying things are really OK.
Sure, get in tools for things like dead link checking (no-one likes trawling through pages), but for most things it's going to depend on what the site does.
A service will only go so far as to make sure you don't have anything blatently wrong. In my experience, it's the non-blatent things that blow up the worst. Little green lights from a third party are nice and all, but you should still be verifying things are really OK.