Incredibly high rate of false spam

Hello,

I’m using CF7 for over a year. Until recently we used the contact form with re-captcha from Google. Recently I ditched the re-captcha and integrated the form with Akismet.

Since doing that all seems to be fine but it’s been only yesterday and we’ve had about 20 tickets so not enough statistics.

But, before the Akismet, we’ve had an incredibly high rate of messages falsly flagged as spam in Flamingo.

Could you please explain a bit about how CF determines a form is a spam or not without Akismet? In all cases the form is flagged as spam does that mean that the user clearly received the message that his email wasn’t sent or were they under the impression everything was ok, only never to receive a response.

Thanks!

krko