Hi,
I have the same issue, I can receive the feedback but not the e-mails from Jetpack contact form...
I already test by check-mail plugin and wordpress sent to me a test mail.
I have also tried with other different e-mail addresses > KO
If I try to sent me a message by contact form in the contact page, it works. The other forms creating with Jetpack, they did not.
They work until two weeks ago and I not changed nothing..... what happen?
I must to contact my Hosting support?
Thank you for your support