Error: Mandrill Merge Vars Not Working

What's Causing This Error

The cause for the Mandrill merge variables not working is possible because of an issue with the nesting.

Solution - Here's How To Resolve It

You have to make sure the variables are nested in the message struct for it to work. Given below is an example of how it is done.

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var message = {
    to: "sample@gmail.com",
    mandrillOptions: {
        template_name: 'template1',
        template_content: [
        ],
        message: {
            "merge": true,
            "merge_language": "handlebars",
            "global_merge_vars": [{
                    "name": "fname",
                    "content": "Sample"
                },
                {
                    "name": "email",
                    "content": "sample@gmail.com"
                }
            ]
        }
    }
}};