diff --git a/app/models/mail_handler.rb b/app/models/mail_handler.rb
index edbbe406b..c827f26f2 100644
--- a/app/models/mail_handler.rb
+++ b/app/models/mail_handler.rb
@@ -436,6 +436,7 @@ class MailHandler < ActionMailer::Base
     user.lastname = '-' if user.lastname.blank?
     user.language = Setting.default_language
     user.generate_password = true
+    user.mail_notification = 'only_my_events'
 
     unless user.valid?
       user.login = "user#{Redmine::Utils.random_hex(6)}" unless user.errors[:login].blank?
diff --git a/test/unit/mail_handler_test.rb b/test/unit/mail_handler_test.rb
index 2b5b3f070..b345683fe 100644
--- a/test/unit/mail_handler_test.rb
+++ b/test/unit/mail_handler_test.rb
@@ -768,6 +768,7 @@ class MailHandlerTest < ActiveSupport::TestCase
       assert_equal expected[0], user.login
       assert_equal expected[1], user.firstname
       assert_equal expected[2], user.lastname
+      assert_equal 'only_my_events', user.mail_notification
     end
   end