On this section we will cover running the MSI installer with some parameters to activate all users and preset settings.

RECONFIGURE Invoke custom action YES/NO. If this parameter is not specified or specified as NO none of below parameters apply to the end users of Open PGP settings i.e. further options are ignored.
FIRSTUSE Wizard for new users False/True
ALWAYSENCRYPT Option to always encrypt selected False/True
ALWAYSSIGN Option to always sign selected False/True
AUTOIMPORTKEYSWHENRECEIVED Import keys automatically when receiving a new PGP email False/True
KEYSERVERS="link" This will allow you to add a personal/private key server to your application
CHECKFORUPDATESONSTART Check for updates as soon as Outlook is launched False/True
ENCRYPTSENTWITHSENDERSKEY Encrypt with sender's key to preserve a copy of the email False/True
REFRESHKEYSONSTARTUP Check for key changes on servers as soon as launched False/True
REMEMBERPASSPHRASE Remember your passphrase selected False/True
REMEMBERPASSPHRASEMINUTES Amount of minutes for the passphrase to be remembered "0-1440"
SENDMULTIPARTMESSAGEASATTACHMENT Option to send as multipart/Mime False/True
PIDKEY Registration code or license key

Command needs to be ran as Administrator and elevating the cmd prompt as Administrator again.

A quick sample of this parameter

msiexec /i "C:\Downloads\EOPGP_Setup(x.x.x).msi" /qn RECONFIGURE="YES" FIRSTUSE="False" ALWAYSENCRYPT="True" ALWAYSSIGN="True" AUTOIMPORTKEYSWHENRECEIVED="True" CHECKFORUPDATESONSTART="True" ENCRYPTSENTWITHSENDERSKEY="True" REFRESHKEYSONSTARTUP="True" REMEMBERPASSPHRASE="True" REMEMBERPASSPHRASEMINUTES="14" SENDMULTIPARTMESSAGEASATTACHMENT="True" PIDKEY="AXXXXXXXXXXXXXXXXXXXXXXXX" KEYSERVERS="http://google.com,http://velja.net,http://someserver.net"