mailgun-ruby Rails setup

mailgun.rb

# in initializers

require "ostruct"
Rails.configuration.mailgun = OpenStruct.new(
  YAML.load_file(Rails.root + "config/mailgun.yml")[Rails.env])

mailgun.yml

development:
  api_key: your-private-key
  mailgun_domain1: your-mailgun1-domain
  mailgun_domain2: your-mailgun2-domain

send_email.rb

message_params =  { from: 'bob@sending_domain.com',
                    to:   'sally@example.com',
                    subject: 'The Ruby SDK is awesome!',
                    text:    'It is really easy to send a message!'
                  }

client = Mailgun::Client.new(Rails.configuration.mailgun.api_key)
client.send_message Rails.configuration.mailgun.mailgun_domain1, message_params