Send more encrypted emails in Outlook using the Outlook add-in. The Outlook add-in is software that embeds to Outlook and allows emails to be sent encrypted by user control and automation. Read more ahead.

Installation Instructions

1. Before installing the PreVeil Outlook Add-in, make sure that Outlook is closed.

2. Download the Auto-Encrypt Add-in to your computer and double-click to run the installer.

3. Click on the ‘Next’ button on PreVeilNewOutlookAddin Setup
   

   

4. Click on Install to install the add-in to your Programs folder
   

   

5. The next time Outlook is opened banners will appear across mail messages. Mail encrypted by PreVeil (in your PreVeil mailbox) will show the Message Encrypted while others will show message not encrypted.
   When drafting a new email message, when encryption mode is turned on the message will be encrypted and sent over PreVeil. When the encryption mode is off it is not sent using PreVeil’s encryption or service. The encryption mode is toggled by a control in the composition window.
   

   

   
   

6. When composing a message directly from your encrypted account in Outlook, the same banner will appear across the top of your email (fig. e). The message will now be sent encrypted through PreVeil.
   If you add the address of a non-PreVeil member, the bar will return to the gray bar. To ensure the individual gets invited to join PreVeil and is able to read the encrypted message, simply click the “Turn On Encryption” button on the upper left. (fig. f)

Keyword auto-encryption

When editing an email from a PreVeil account and a CUI keyword is input to the subject line the encryption mode will automatically turn on. The CUI word or acronym is case sensitive and the mode is turned on as the user clicks off the subject line. There must be a word boundary for each keyword. For instance, if they keyword is “CUI”, the following sequences will not cause a switch to encrypted mode.

HelloCUI out there

Hello CUIout there

HelloCUIout there

What are the key words?

The key words are the following.

1. CUI

2. ITAR

3. Confidential

4. Encrypt

5. Sensitive

6. FOUO

7. Secure

8. FCI

Editing the key words

The behavior of the keyword encryption is set up by the keyword file (outlook-keywords-settings.json), which is installed once and is never updated. A default keyword configuration file is installed on the system if a previous file does not exist. The location of that file is “C:\ProgramData\Preveil\PreVeilNewOutlookAddin.”

Note: This file will not be visible if the correct options are not set in the File Explorer options. Make sure the options are properly set as denoted in the following picture.

About the Keyword File

The keyword file is a JSON file that contains a list of keywords (example follows). Each keyword is case-insensitive. The add-in will convert each keyword to uppercase. So, no matter what case is in the file, the add-in will convert the keyword to uppercase.

Keyword Encryption Disable

The keyword auto-encrypt will be disabled if the edited email switches to encrypted and then the user clicks the encryption button to return to an unencrypted mode. When that sequence happens, auto-encrypt is disabled for that specific email. If you open up another email, keyword encryption is enabled again.