diff --git a/app/models/dmail.rb b/app/models/dmail.rb
index e1c2c6df1..c363cc0f5 100644
--- a/app/models/dmail.rb
+++ b/app/models/dmail.rb
@@ -193,7 +193,7 @@ class Dmail < ActiveRecord::Base
   end
 
   def send_dmail
-    if to.receive_email_notifications? && to.email.include?("@") && owner_id == to.id
+    if to.receive_email_notifications? && to.email =~ /@/ && owner_id == to.id
       UserMailer.dmail_notice(self).deliver_now
     end
   end