THRU.config
[THRUConfiguration]
THRU.default.config is the configuration file that sets the Thru Addin for Microsoft Outlook back to its default settings.
It is typically used when upgrading Thru Addin for Microsoft Outlook for Outlook where the “set default” option is selected.
The file THRU.config stores the parameters set by the user and preserves the parameters when Thru Addin for Microsoft Outlook is upgraded.