Send emails in RoR via pdd.yandex.ru

home_contorller.rb

class HomeController < ApplicationController
  def contacts
    UserMailer.notify_email( params[:text]).deliver
  end
end

production.rb

Restorator::Application.configure do
  # ...
  config.action_mailer.raise_delivery_errors = true
  config.action_mailer.perform_deliveries = true
  
  config.action_mailer.smtp_settings = {
    address: 'smtp.yandex.ru',
    domain: 'smtp.yandex.ru',
    port: 25,
    user_name: 'noreply@domain.com',
    password: 'secure_password',
    authentication: :login,
    # enable_starttls_auto: true
  }
  # ...
end

user_mailer.rb

#encoding: utf-8
class UserMailer < ActionMailer::Base
  default from: 'noreply@domain.com'
 
  def notify_email(text)
    #cF1yuTD86jsqZay90ATq
    delivery_options = { user_name: 'noreply@domain.com',
                         password: 'secure_password',
                         address: 'smtp.yandex.ru' }
    mail(to: 'receiver@domain.com',
         body: "Text",
         content_type: "text/plain",
          subject: 'Subject from domain.com',
          delivery_method_options: delivery_options)
  end
end