simple_crm/app/mailers/contact_mailer.rb

class ContactMailer < ApplicationMailer
  default from: 'kontakt.ubezpieczenie@gmail.com'
  default to: 'adhinz@gmail.com'

  def contact_email(contact)
    @contact = contact
    mail(subject: "Kontakt ze strony ubezpieczenie-naleznosci.pl")
  end
end