EmailSentry™ Office 365 Centralized Deployment

See Office 365 Centralized Deployment

Windows Installer (MSI)

EmailSentry can be installed from a standard Windows Installer (.msi) file. These can be pushed to users using Group Policy or System Center or any other PC management tool. Automated Installation (.msi) is useful for larger (more PCs) installations since it requires more technical expertise to setup but is much easier for users.

The latest .msi is here.

These same PC managment tools can prevent users from uninstalling the Add-in, so users are forced to deal with "unsafe" email immediately.

See these Microsoft links for more information:
Use Group Policy to remotely install software
Support for keeping add-ins enabled
The ProgID for EmailSentry is just "EmailSentry".

Installation Options

The default EmailSentry installation is "per user". This is the preferred install where each user on the same PC has their own version of the add-in. The registry entries, files, and the FixedConfigFile are unique for each user. "per user" allows more configuration operations and Outlook just seems to work better this way.

EmailSentry can also be installed "per machine" instead using command line option HKLM. "per machine" installs one copy of the registry entries and files on the PC that are shared by all users. Note: even PCs that are shared by more than one person typically only have one "user". Unless you have multiple logins enabled on a PC, the PC has just one of what Windows considers a "user".

Command line options available when executing the .msi are:

installs a Full License instead of the Trial License
installs the add-in "per machine" instead of "per user"
does not add the registry entries to prevent disabling the add-in due to slow start
tells 64-bit Outlook to use 32-bit add-in (only useful with "per machine" installs)
For example all these options at once would look like: msiexec /i EmailSentry.msi CODE="[customercode]" PASS="[customerpass]" HKLM=1 NORESILIENCY=1 WOWCOPY=1


Include valid CUSTOMERCODE and CUSTOMERPASS parameters to install a Full License for EmailSentry. In effect this installs an organizations's FixedConfigFile on each user's PC. If your FixedConfigFile has any custom settings besides AUTH then this option will not work. See Features, Configuration, and Customization for more info.


The HKLM option installs EmailSentry once on the "Local Machine" rather than "Current User" (HKCU). An HKLM install lets all the users of a PC use one EmailSentry install, but all users then share the same settings. HKLM also requires Administrator privledges and the install has access to more privledges settings on the computer. We recommend staying with the HKCU (the default without the HKLM command line option).

HKLM changes the registry key that points to the files from the first entry below to the second: HKCU\SOFTWARE\Microsoft\Office\Outlook\Addins\EmailSentry HKLM\SOFTWARE\Wow6432Node\Microsoft\Office\Outlook\Addins\EmailSentry It changes the registry key that instructs Outlook to load the add-in from the first to the second: HKCU\SOFTWARE\SecurEmailLLC\EmailSentry HKLM\SOFTWARE\Wow6432Node\SecurEmailLLC It changes the registry key that prevents Outlook from disabling the add-in due to slow start from the first to second: HKCU\SOFTWARE\Microsoft\Office\16.0\Outlook\Resiliency\DoNotDisableAddinList HKLM\SOFTWARE\WOW6432Node\Microsoft\Office\16.0\Outlook\Resiliency\DoNotDisableAddinList and HKCU\SOFTWARE\Policies\Microsoft\Office\16.0\Outlook\Resiliency\AddinList HKLM\SOFTWARE\WOW6432Node\Policies\Microsoft\Office\16.0\Outlook\Resiliency\AddinList See WOWCOPY below for important information.


Do not add registry entries that prevent Outlook from disabling the add-in due to slow start.


Duplicates the first entry below in the second: XXXX\SOFTWARE\Wow6432Node\Microsoft\Office\Outlook\Addins\EmailSentry XXXX\SOFTWARE\Microsoft\Office\Outlook\Addins\EmailSentry and XXXX\SOFTWARE\Wow6432Node\SecurEmailLLC XXXX\SOFTWARE\SecurEmailLLC\EmailSentry and XXXX\SOFTWARE\WOW6432Node\Microsoft\Office\16.0\Outlook\Resiliency\DoNotDisableAddinList XXXX\SOFTWARE\Microsoft\Office\16.0\Outlook\Resiliency\DoNotDisableAddinList and XXXX\SOFTWARE\WOW6432Node\Policies\Microsoft\Office\16.0\Outlook\Resiliency\AddinList XXXX\SOFTWARE\Policies\Microsoft\Office\16.0\Outlook\Resiliency\AddinList (where XXXX is HKCU or HKLM depending on command line option HKLM) See Add-ins for Office may be under Wow6432Node for more info.

Install Certificate

During the install process, some combinations of Windows security settings and the EmailSentry installation method can display one or more warnings about Certificates. You can silence these by trusting our Publisher Certificate before installing EmailSentry. See SecurEmail LLC Publisher Certificate Install for more information.