thank you for verifying. I would like to have a closer look at the connection error on the backend. Could you send me the email address of the inbox you're trying to connect and your account ID in a direct message via my Community profile?
Thank you for reaching out to the Community! You should still be able to connect your inbox via IMAP, but it seems you'll need to configure your IMAP settings on a more granular level. Could you please follow the instructions in this Knowledge base article (especially the part about allowlisting the IP addresses that HubSpot uses)? Thank you!