gistfile1.js

var MailChimpAPI = require('mailchimp').MailChimpAPI;

var crypto = require('crypto')
,	mongoose = require('mongoose')
, 	_ = require('underscore');

var Schema = mongoose.Schema, ObjectId = Schema.ObjectId;

var InvitationType = new Schema({
    key         : ObjectId,
    hash        : String,
    email       : String, 
    timestamp   : { type: Date, default: Date.now }
});

var Invitation = mongoose.model('Invitation', InvitationType);
mongoose.connect(process.env.MONGOLAB_URI);

Invitation.remove(function(err, affected){
	console.log("[APP] Cleaned up " + affected + " records");
});

var api = new MailChimpAPI(apiKey, { version : '1.3', secure : true });

api.listMembers({id: MAILCHIMP_LIST_ID, limit: 15000}, function(res){
	var index = 1;
	_.forEach(res.data, function(entry){
		api.listMemberInfo({id: MAILCHIMP_LIST_ID, email_address: entry.email}, function(users) {
			if(!users.data) return;

			var user = users.data[0].merges;

			if(!user) return;

			console.log("[APP] processed " + index + "/" + res.data.length + " with "  + user['INVITE'] + " " + user['EMAIL']);

			var invite = new Invitation({hash: user['INVITE'], email: user['EMAIL']});
			invite.save(function(err){});
			index++;
		});
	});
});

return;