I contacted the addon author, but I'll still try my luck here as well.
Using Contact Form 7 built-in form builder, I wanted to create my subscribe form. The thing is that I'd want to validate the form prior to submitting it using the CF7 built-in validator. This way, I could check the email and name field before sending it to CM.
Also, there is that Acceptance Field that need to be ticked... Any suggestion of what to write down there? I find the process of subscribing pretty complex if I need to tick a box... or even if there is an extra field showing!