Mandrill SMTP API integration for ActionMailer. See detail of the protocol on the official page.

Add the mandriller gem to your Gemfile.

gem "mandriller"

And run bundle install.

Add the following into any environment's settings in config/environments/.

config.action_mailer.delivery_method = :smtp
config.action_mailer.smtp_settings = {
  :user_name => 'UserName',
  :password => 'Password',
  :address => "smtp.mandrillapp.com",
  :domain => "your-domain.com",
  :enable_starttls_auto => true,
  :authentication => 'login',
  :port => 587,
}

e.g.

class UserMailer < Mandriller::Base
  include AbstractController::Callbacks # To use before_filter in ActionMailer::Base

  set_open_track
  set_click_track
  set_google_analytics [Settings.root_host, Settings.admin.host].uniq

  before_filter do
    set_google_analytics_campaign "#{mailer_name.gsub(/_mailer$/, '')}/#{action_name.gsub(/_email$/, '')}"
  end

  def test_mail
    mail from: 'from@example.com', to: 'to@example.com'
  end
end

You can set the options globally and locally. Locally set option overwrites the one globally set. Just add any settings necessary for your mailers from the list below.

Enable open-tracking for the message.

• set_open_track or set_open_track true: Enable
• set_open_track false: Disable

Enable click-tracking for the message.

• set_click_track 'all': enables click tracking on all emails
• set_click_track 'htmlonly': enables click tracking only on html emails
• set_click_track 'textonly': enables click tracking only on text emails

Automatically generate a plain-text version of the email from the HTML content.

• set_auto_text or set_auto_text true: Enable
• set_auto_text false: Disable

Automatically generate an HTML version of the email from the plain-text content.

• set_auto_html or set_auto_html true: Enable
• set_auto_html false: Disable

Use an HTML template stored in your Mandrill account

• set_template 'template_name' or set_template 'template_name', 'block_name':

template_name

the name of the stored template.

block_name

the name of the mc:edit region where the body of the SMTP generated message will be placed. Optional and defaults to "main".

Add dynamic data to replace mergetags that appear in your message content.

• set_merge_vars foo: 1, bar: 2

Add Google Analytics tracking to links in your email for the specified domains.

• set_google_analytics ['foo.com', 'bar.com']

Add an optional value to be used for the utm_campaign parameter in Google Analytics tracked links.

• set_google_analytics 'campaign_name'

Information about any custom fields or data you want to append to the message.

• set_metadata foo: 1, bar: 2

Whether to strip querystrings from links for reporting.

• set_url_strip_qs or set_url_strip_qs true: Enable
• set_url_strip_qs false: Disable

Whether to show recipients of the email other recipients, such as those in the "cc" field.

• set_preserve_recipients or set_preserve_recipients true: Enable
• set_preserve_recipients false: Disable

Whether to inline the CSS for the HTML version of the email (only for HTML documents less than 256KB).

• set_inline_css or set_inline_css true: Enable
• set_inline_css false: Disable

Set a custom domain to use for tracking opens and clicks instead of mandrillapp.com.

• set_tracking_domain or set_tracking_domain true: Enable
• set_tracking_domain false: Disable

Set a custom domain to use for SPF/DKIM signing instead of mandrill (for "via" or "on behalf of" in email clients).

• set_signing_domain or set_signing_domain true: Enable
• set_signing_domain false: Disable

Select a subaccount for sending the mail.

• set_subaccount 'subaccount_id'

Control whether the View Content link appears for emails sent for your account.

• set_view_content_link or set_view_content_link true: Enable
• set_view_content_link false: Disable

An optional address that will receive an exact copy of the message, including all tracking data

• set_bcc_address 'email_address'

Whether this message is important and should be delivered ahead of non-important messages

• set_important or set_important true: Enable
• set_important false: Disable

Specify a dedicated IP pool for the message.

• set_ip_pool 'dedicated_ip_pool'

Specify a custom domain to use for the message's return-path

• set_return_path_domain 'example.com'

Specify a future date/time that the message should be scheduled for delivery

• set_send_at 5.days.from_now

Only available for paid accounts

Add tags to your emails.

• set_tags ['tag1', 'tag2']

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request

Copyright (c) 2014 Daisuke Taniwaki. See LICENSE for details.