Hello, I have the same problem. Only 5 e-mails were rejected on 133 emails sent and the emailing tools is now blocked → A bounce rate of < 5%. Also, many e-mails are confirmed and used daily with normal e-mail either with hubspot and other client as Outloook, but the emailing declared them as Bounce or Spam. I really do not understand what is going on… I was really enthusiast with hubspot but now I am very disapointed.
Also, how can you say that this problem is now solved. It’s totally not. We do not have clear responses of what to do to prevent this matter and what to do to continue to use emailing.
I will probably lost my job with this action that can not be fixed, except without using emailing which is not a serious solution.
Best.
Local-Prod