After a successful integration, the status should show "Authorized".
The system will create tickets based on the unread emails. After creating the ticket, the emails will be marked as read. To get the replies in the same tickets, the system will check the ticket ID in the email subject. If there is no ticket ID in the subject, that will be considered as a new ticket. You can setup the email subject from Settings>Email templates.
General IMAP Integration
You can setup any IMAP credentials to enable the integration. Before you doing this, please ensure you've enabled IMAP access from your email.
If you want to use Gmail or Outlook API, please follow the following docs:
IMAP Integration (Microsoft Outlook)
Troubleshooting guideline for Gmail IMAP
If you face any problem to connect IMAP of Gmail, please check this: