var Sendy = require('sendy-api'),
    sendy = new Sendy('http://your_sendy_installation/', 'your_api_key');

sendy.subscribe({email: "[email protected]", list_id: 'your_list_id'}, function(err, result) {
    if (err) console.log(err.toString());
    else console.log('Success: '   result);
});

var params = {
    email: '[email protected]',
    list_id: 'your_list_id'
}

sendy.subscribe(params, function(err, result) {
    if (err) console.log(err.toString());
    else console.log('Subscribed succesfully');
});

var params = {
    email: '[email protected]',
    list_id: 'your_list_id'
}

sendy.unsubscribe(params, function(err, result) {
    if (err) console.log(err.toString());
    else console.log('Unsubscribed succesfully);
});

var params = {
    email: '[email protected]',
    list_id: 'your_list_id'
}

sendy.status(params, function(err, result) {
    if (err) console.log(err.toString());
    else console.log('Status: '   result);
});

var params = {
    list_id: 'your_list_id'
}

sendy.countActive(params, function(err, result) {
    if (err) console.log(err.toString());
    else console.log('Active subscribers: '   result);
});

var params = {
    from_name: 'Your name',
    from_email: '[email protected]',
    reply_to: '[email protected]',
    subject: 'Your Subject',
    plain_text: 'Campaign text'  // optional
    html_text: '<h1>Campaign text</h1>',
    send_campaign: 'true' // optional, set to false if you just want to create a draft campaign
    list_ids: 'your_list_id' // seperate multiple lists with a comma. Only required if send_campaign parameter is true
    brand_id: 'your_brand_id' // only required if send_campaign parameter is false
};

sendy.createCampaign(params, function(err,result){
    if (err) console.log(err.toString());
    else console.log(result);
});