the first time I was to lazy to read the (well written) documentation.
Just playing around and looking for some fancy features.
After trying a couple of those fancy plugins (and spent money for some) I came back to contact form 7 and gave it a second try.
And well - if you're willing to read and follow the instructions, it works really, really great. Simple & easy and clever.
So, if your looking for a wonderful contact form plugin, test this one, and please read the documentation. Going that way you'll not waste the amount if time i did.
Thanks for your work and support.