Restricting Salary details within emails

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When we implemented HCM, we had a requirement of removing salary details from within the BIP email approval template.  Approvers could authenticate into the product and see the salary details via worklist.

With the Newsfeed implementation, the BIP view from the emails is now used for the worklist review as well.  This has caused our approvers to not be able to see salary details even when authenticated. We are now left trying to figure out how to manage the need to restrict salary from email but allow authenticated approvers to see it.

Do other companies have a similar business need - restricting salary details from email? We have employees that have access to others' email boxes for a variety of business needs, so we are concerned with exposing salary details so easily via email.