It is possible to detect and manage duplicate emails from within your inboxes. To enable this setting to navigate to your inbox and Settings > Detect Duplicate Emails
Once enabled you to have various settings you can choose from including determining how a duplicate email would be identified. This can be done by either the File Attachment (Names and Sizes) or by the Sender and Subject Line
You can then also determine the interval time for which emails will be searched to identify the duplicate. This can be within the Last Day up to 14 days
The final settings will determine if those emails should still be parsed and exported. You can select those options as fits your use-case.
Note: This feature is available only for users of Annual Plans and for monthly Business Plans onwards.
This feature can be purchased for paid plans in the Subscription > Purchase Feature Addons section.