diff --git a/app/mailers/invoice_mailer.rb b/app/mailers/invoice_mailer.rb
index 072386fa1..51c370994 100644
--- a/app/mailers/invoice_mailer.rb
+++ b/app/mailers/invoice_mailer.rb
@@ -1,5 +1,10 @@
 class InvoiceMailer < ApplicationMailer
   def invoice_email(invoice, pdf)
+    unless Rails.env.production?
+      test_emails = ['martin@gitlab.eu', 'priit@gitlab.eu']
+      return unless test_emails.include?(invoice.billing_email)
+    end
+
     attachments[invoice.pdf_name] = pdf
     mail(to: invoice.billing_email, subject: invoice)
   end