This is hard to believe. One response from HubSpot and then all these follow-up? The least HubSpot could do is pop back in to say "sorry, we don't have any clue what we're doing or when"
HubSpot, is this still in progress? Did you cancel the project? It's make-or-break. I made the mistake of cancelling my MixMax as soon as I read about your gmail integrations but now I need to go back and buy that again?
This will prob be a dead issue now that Gmail confirmed they will be killing Google Inbox in March 2019. Let's just have them fix the bugs with the extension and the new version of GMail.