Getting the same issue here - valid email addresses from users being inputted with the error “Please enter your work email”. Please could someone reach out to help?
You can ask Hubspot support through chat to “unbounce” the address manually, at least that was the problem with some of the emails that were flagged as invalid on our forms:
The email is valid, however it has previously bounced more than once, so it is now considered “globally” bounced (essentially this means that we can’t email this contact until we unbounce them). This marks the email as “invalid” by our forms tool each time we try to input it because the system thinks it’s not valid, since it has bounced before. I can unbounce the email for you on my side if you can confirm that it’s a valid email address. It sounds like it is, since the customer has queried this with you, so I’m going to go ahead and unbounce the contact here on my side.
thanks for your message. unfortunately we’re relying on these forms all across our website (ie. for prospects to book demos). There’s dozens submissions an hour currently getting the error “please enter a valid email” even though their email is valid. We also can’t see what email they tried submitting with (because the form itself is preventing them from submitting it 
) so unbouncing manually / retrospectively won’t be a solution. We contacted support yesterday but no response as of yet.
Yes I understand. We had the same problem so we coded a custom solution on top of our forms to track these “invalid” emails (if visitor gave consent) so that our SDRs can contact these people manually.