gistfile1.rb

class Mailer
  API_TOKEN = api_token_here

  def send_test
    client = Postmark::ApiClient.new(API_TOKEN)

    puts 'Starting send...'

    client.deliver(
      from: 'FROMEMAIL',
      to: 'TOEMAIL',
      subject: 'Weekly Email',
      html_body: erb(:weekly_email))

    puts 'Send finished!'
  end
end