A new comment will be added to the existing issue.

When the resent email is processed the mail handler recognizes that the message belongs to the original conversation by using threading cues such as the ticket identifier in the subject or email headers. Because of that detection a new comment will be added to the existing issue rather than creating a separate record.

A new issue will be created in the project is incorrect because the handler matches the incoming message to the existing thread and does not open a fresh issue when it can attach the content to the original one.

A new issue will be created and linked to the original issue is incorrect because the system does not create a second issue and then link it when the message clearly belongs to the initial conversation.

A new subtask will be added under the original issue is incorrect because incoming emails are treated as comments or new issues and are not converted into subtasks automatically.

The mail handler will ignore the forwarded message as a duplicate is incorrect because the message is still processed and recorded on the original issue as a comment rather than being silently dropped.

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