Allow deletion of archived Elements after x days

Hello,

I´m searching for a possibility to allow user to delete archived items after a specific time range. We only use EV (EV 10 for Exchange) as technical archive to clean up mailboxes etc.

Mailboxes were scanned from EV to archive all Email Elements older than 2 weeks. After 90 days the user should have the possibility to delete mails with the archive explorer.

Maybe there is a possibility to change the retention category of elements after the given time and allow users to delete mails in this new retention category?

Thanks in advance

Jakob