Ruby script to send email though ActionMailer

mailer_example.rb

require 'action_mailer'

ActionMailer::Base.smtp_settings = {
  address:        'smtp.yourserver.com', # default: localhost
  port:           '25',                  # default: 25
  user_name:      'user',
  password:       'pass',
  authentication: :plain                 # :plain, :login or :cram_md5
}

class Test < ActionMailer::Base
  default from: 'sender@test.test'

  def test
    mail(to: 'atapys@gmail.com',
         subject: "Test") do |format|
      format.html { render :text => 'Test body' }
      format.text { render :text => 'Test body' }
    end
  end
end

message = Test.test   # => Returns a Mail::Message object
message.deliver_now