Let us group the mandrill configuration options

[gabipetrovay]

Currently we have:

{
    "mandrillKey": "MD_API_KEY",
    "notificationTemplate": "dd-export-notification"
}

It will look better like:

{
    "mandrill": {
        "apiKey": "MD_API_KEY",
        "templates": {
            notification: "dd-export-notification"
            ... other templates could go in here ...
        }
}

With such a configuration we can have a standard piece of code that extracts the needed information (considering that we have more modules that would use this: login, ie-dms)