Mailchimp

Installation

Add this line to your application's Gemfile: gem 'mailchimp-rails', git: 'https://github.com/Kr00lIX/mailchimp_rails.git'

And then execute:

$ bundle

Or install it yourself as:

$ gem install mailchimp

rails generate mailhimp:install

This will generate the initializer file.

Declare mailchimp_user on your user model: class User < ActiveRecord::Base

  mailchimp_user do |user|
    # describe mailchimp's params
    {
      EMAIL: user.email,
      NAME: user.full_name
    }
  end

end

Add Mailchimp web hooks routes:

Site::Application.routes do
  match 'api/unsubscribe' => Mailchimp.routes
end

and add http://{site_hostname}/api/unsubscribe url to mailchimp webhooks panel