I have been able to connect one of my inboxes to hubspot so that I can send emails from it and the inboxes are synced etc.
However when my other users try to connect theirs it doesn’t work - it says the credentials are incorrect but they definitely aren’t - I have checked and rechecked the passwords and tried multiple times to sort it.
Hi @DAllchurch,
Thank you for reaching out to the Community!
I understand that one user is trying to connect his personal email via IMAP, is that right?
I can see that in the article (link above) I shared, it is stated “Please note: if you are trying to connect an email account to the conversations inbox, you need to connect an inbox that is hosted with either Gmail or Office 365. Conversations does not support an IMAP connection.”.
Can you confirm that you are not trying to connect the IMAP inbox to the conversations’ inbox?
Can you also review the technical requirements listed here please. You must meet all of the technical requirements before you can connect.
Are you using the two-factor authentication?
If your email inbox uses two-factor authentication, you’ll need to enter a third-party app password. Review documentation from your email provider (e.g., Yahoo Mail or iCloud) for instructions on how to generate a third-party app password. Learn more about connecting your inbox with two-factor authentication on the Community.
I’d like to share this article “Troubleshoot errors when connecting an inbox with IMAP and SMTP” that might help you!
More particularly, I would check these points on the article specific to the error you are getting.
Please let me know after reviewing all of these, if you still have the same behavior, please?
Also, if anybody else has anything to add and/or share, please feel free to join in the conversation 
Thanks and have a nice day!
Best,
Bérangère
Thank you - using a third-party app password solved the issue.
