Skip to main content
My preferencesSign out
Proofpoint, Inc.

Proofpoint Essentials Email Encryption Plug-in for Outlook

Situation Does the Proofpoint Essentials product have a plug-in for the Encryption product?

Download the plug-ins for encryption here.

Install the encryption plug-in.

Verify plug-in installation.

Ensure filter enabled.

Download the plug-ins for Encryption

Exchange Version   Window's Version   Outlook Version   Proofpoint Installer

Exchange 2007

Exchange 2010

Exchange 2013



Windows 7


Outlook 2007

Outlook 2010

Outlook 2013



PE_Plugin_Outlook_1.2.6.0_x64 (64 bit)

Exchange 2010

Exchange 2013

Exchange 2016


Windows 7

Windows 10


Outlook 2010

Outlook 2013

Outlook 2016



PE_Plugin_Outlook_1.3.9.5_x64 (64 bit)


Support Version

The above compatibility matrix will help in getting the appropriate plug-in. Please note that the installer depends on the Outlook bit version, and not the OS bit version.


Installing the outlook plug-in


Before Installation

Please make sure your Outlook Program is closed out prior to installation of the plug-in.

  1. From where you downloaded the installation file, double-click to start the installation.
  2. Click Run on the security warning if it pops up.
  3. Click Next  on the Proofpoint Encryption Plug-in for Microsoft Outlook Set-up screen.
  4. Check the box for the license agreement and click Next.
  5. Click Next to install in the default folder or click Change to select another location.
  6. Click Next.
  7. Click Install.
  8. Click Finish when the installation has completed.

Verify Plug-in Installation

  1. Launch Outlook.
  2. Compose a new message.
  3. Look for the Send Securely button in the message composition window.

Ensure Filter Enabled

Please review the KB for How to set-up Email Encryption to ensure the filter is enabled.