Confidential header Zimlet

This Classic UI Zimlet implements the reading and setting of the Sensitivity header RFC2156, it is implemented the same way as in MS Outlook, mainly to keep it consistent.

For the Modern UI version take a look at https://github.com/Zimbra/zimbra-zimlet-confidential-header.

Configuring Zimbra

To allow the setting of the Sensitivity header one must enable it on the Zimbra server:

zmprov mcf +zimbraCustomMimeHeaderNameAllowed Sensitivity

Screenshots

Display of the Sensitivity header in Zimbra

Display of the Sensitivity header in Zimbra

The Sensitivity button in the email composer

The Sensitivity Zimlet Dialog

Display of the Sensitivity header in MS Outlook

Setting the Sensitivity header in MS Outlook

Further reading

• https://github.com/Zimbra/confidential-header-zimlet
• https://www.rfc-editor.org/rfc/rfc2156#section-5.3.4
• https://gallery.zetalliance.org/extend/items/view/confidential-header-zimlet