Ability to filter incoming email based on email subject

Problem Definition

Currently, there's no option to filter JIRA Service Desk incoming email based on email subject. There's an incident multiple issue created with a same email subject due to the user send multiple times.

Suggested Solution

It will be best if the email can have a customize filter. For example , if the email subject is same and the previous issue created with the same subject already closed or still open , then a new ticket created.

Why this is important

Provide flexibility to the administrator to control their incoming email.

Workaround

No workaround.