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Tracks email open rate by including a tracking pixel in the message body.
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 Dependencies

Development

Runtime

~> 5.2
 Project Readme

ActionMailerPixel

ActionMailerPixel allows you to easily track your mailers' open rate.

How it works

When you enable the open tracking pixel on a mailer, a simple img tag will be inserted right before the closing body tag upon delivery. The source of the image tag leads to the /open.png path wherever you mounted the engine in your application. The response is a 1x1px transparent PNG image. When the email is opened by an email client, the pixel might get rendered (depending on the security/privacy settings) and the opening will be saved. Open rate is tracked by user and by email campaign. This way you can see exactly who opened a specific email.

Usage

1. Default (convention over configuration) - pixel is created with the first available of the following:

  • @user -> params[:user] -> recipient_class.find_by(email: message.to.first)
  • @campaign -> params[:campaign]
class PixelMailer < ApplicationMailer
  open_tracking_pixel

  def sample
    mail(to: 'recipient@example.com')
  end
end

2. Explicit use - pixel is created with the provided data

class PixelMailer < ApplicationMailer
  open_tracking_pixel recipient: -> { params[:user] },
                      campaign:  -> { params[:campaign] }

  def sample
    mail(to: 'recipient@example.com')
  end
end

Installation

Add this line to your application's Gemfile:

gem 'action_mailer_pixel'

And then execute:

$ bundle
$ bundle exec rails action_mailer_pixel:install:migrations
$ bundle exec rails db:migrate
$ bundle exec rails action_mailer_pixel:install

Mount the engine on a path of choice in config/routes.rb:

mount ActionMailerPixel::Engine => '/action_mailer_pixel'

Contributing

Contributions are welcome.

License

The gem is available as open source under the terms of the MIT License.