diff --git a/app/jobs/send_newsletter_job.rb b/app/jobs/send_newsletter_job.rb
index d75686e..2329128 100644
--- a/app/jobs/send_newsletter_job.rb
+++ b/app/jobs/send_newsletter_job.rb
@@ -3,7 +3,7 @@ class SendNewsletterJob < ApplicationJob
   queue_as :default
 
   def perform
-    emails = Email.all
+    emails = Email.where('sended = 0')
     emails.each do |em|
       NewsletterMailer.news_mail(em.email).deliver
       em.sended = true