#place this directly in the rails console of ur rails application
class UserMailer < ActionMailer::Base
  default from: 'sender@espace.com.eg'
 
  def test_email
    @receiver_email = 'mahmoud.said@espace.com.eg'
    mail(to: @receiver_email, subject: 'testing email from console')
  end
end

UserMailer.test_email.deliver!

# If the configuration is correct and everything is fine, the receiver should receive the test email instantly