Duplicate messages can accumulate over time if there are repeated backups, sync activities, or multiple migration attempts, which increases mailbox size and storage consumption. This is where the SysInfo Webmail Backup Tool comes into play. It has advanced features to handle duplicates and, in turn, helps in better email management. The software has a Remove Duplicate Mails feature that identifies duplicate emails on the basis of Subject, Body, From and To fields while preserving the original folder hierarchy. It also features the Exclude Deleted Emails and Empty Folders option that lets users focus only on the mailbox’s valuable content during backup and migration. Another useful feature is Free Up Server Space, which allows you to delete source emails after successful migration, helping create additional storage capacity on the server. The software offers support for a number of email platforms and output formats providing a smooth backup experience and reducing unnecessary clutter in the mailbox and ensuring data consistency.