In the Conversation Tool, recently a few of one-to-one emails are not being delivered with error message "Message Failed to be Delivered". I could not get any resources to help me unbounce the valid email addresses.
I was told that I could not unbounce them as am on a free account and HubSpot support will also not be able to do so for the same reason.
You can find the required subscriptions in the article I linked, in the info box at the very start. As I mentioned in my previous reply, it has to be a Marketing Hub Professional or CMS Hub Professional subscription.
Karsten Köhler HubSpot Freelancer | RevOps & CRM Consultant | Community Hall of Famer
@karstenkoehler You have been of great guidance/help already and I truly appreciate it. As bizarre as this may seem - all the contacts email were bouncing, emails are now going through - I can't explain but all good for me 🙂