ActionMailer test

actionmailer-test.rb

class TestMailer < ActionMailer::Base
  default from: "[email protected]"

  def test_mail
    mail(
      to: "Harry Wood <[email protected]>",
      subject: "Testing mail sending",
      from: "[email protected]",
      content_type: "text/html",
    ) do |format|
      format.text do
        render :text => 'Test body text'
      end
    end
  end
end

TestMailer.test_mail.deliver