CF7 3rd pty integration

I was attempting to pass my parms to a form over at hostmonster using Contact Form 7 as the go-between.

I added 2 variables, but then got an error back. The key line was this:
[response] => This can not be accessed this way, you need to have an input field named ‘sendtoemail’

I don’t see any comparable field in CF7. What is it?

Paul

https://wordpress.org/plugins/contact-form-7-3rd-party-integration/