Policy Setting to prevent users from deleting any email

Is there somewhere in the policy settings to prevent users from deleting any email from their mail file (and archives)?

Thanks.

Subject: Reply from IBM

You would have to drop the user access to Author and uncheck the delete documents role in the ACL.

Subject: wrong

you don’t have to drop them to Author. Just drop them to at most Designer then deselect Delete Documents. Dropping them below Manager prevents them from modifying the ACL and re-enabling delete documents. Keep in mind though that the mail file owner could use the delegation profile to give someone else the rights to delete documents.