Simple email analytics for your Rails app
Ponch lets you track opened emails if you're using your own sendmail server or Amazon SES.
Only works on Rails 3.x
It works by inserting an 1x1 tracking gif on your html emails and adding a controller that handles the request to that image.
Simply add in your Gemfile
gem 'ponch'
and then set in your config/environment.rb (or in each environment file) the details for
config.ponch.url_options = {host: "localhost", port: 3000}
And then Ponch takes care of the rest for you!
Ponch is released under the MIT license.