Ruby on Rails

class InterviewNotificationMailer < ActionMailer::Base

  default from: "jguerra@jginfosys.com"

  # Subject can be set in your I18n file at config/locales/en.yml
  # with the following lookup:
  #
  #   en.interview_notification_mailer.interview_request.subject
  #
  def interview_request
    @greeting = "Hi, you have an interview request."

    mail to: "jguerra@jginfosys.com", subject: "Interview request!"
  end

end

InterviewNotificationMailer.interview_request.deliver    I didn't make any changes to the mailer view.  You have to make sure you call the mailer correctly (the class, followed by def, and the action (.deliver))

That's it.

You can post your solution, maybe it will help others in the future.