We have set up an IMAP mail handler to our Jira Service Desk - Free account. The handler is set to "Create a new issue or add a comment to an existing issue". Our users can create issues by emailing our internal support email address without issues. As agents, we can add a comment into the ticket and it will email the comment to our end-user via email. BUT when the end-user replies to the email, it is not adding a comment to the issue. Please advise what we could have missed!
Thank you in advance.