diff --git a/app/views/mailer/comment.html.erb b/app/views/mailer/comment.html.erb
index d831b60bc..44c4af83e 100644
--- a/app/views/mailer/comment.html.erb
+++ b/app/views/mailer/comment.html.erb
@@ -25,6 +25,6 @@
         style: "color: #2895F1; text-decoration: none;"
       ),
       notification: User.human_attribute_name(:email_on_comment)
-    )) %>
+    ), attributes: %w[href style]) %>
   </p>
 </td>
diff --git a/app/views/mailer/direct_message_for_receiver.html.erb b/app/views/mailer/direct_message_for_receiver.html.erb
index c24b071e6..4490113b3 100644
--- a/app/views/mailer/direct_message_for_receiver.html.erb
+++ b/app/views/mailer/direct_message_for_receiver.html.erb
@@ -25,6 +25,7 @@
     <%= sanitize(t("mailers.direct_message_for_receiver.unsubscribe_text",
         notifications: link_to(t("mailers.config.notifications_link"),
                         edit_subscriptions_url(token: @token),
-                        style: "color: #2895F1; text-decoration: none;"))) %>
+                        style: "color: #2895F1; text-decoration: none;")),
+                        attributes: %w[href style]) %>
   </p>
 </td>
diff --git a/app/views/mailer/newsletter.html.erb b/app/views/mailer/newsletter.html.erb
index e28be0eea..33df7aa93 100644
--- a/app/views/mailer/newsletter.html.erb
+++ b/app/views/mailer/newsletter.html.erb
@@ -11,6 +11,6 @@
         style: "color: #2895F1; text-decoration: none;"
       ),
       notification: User.human_attribute_name(:newsletter)
-    )) %>
+    ), attributes: %w[href style]) %>
   </p>
 </td>
diff --git a/app/views/mailer/reply.html.erb b/app/views/mailer/reply.html.erb
index ac1b7ee55..2aa9f2f75 100644
--- a/app/views/mailer/reply.html.erb
+++ b/app/views/mailer/reply.html.erb
@@ -25,6 +25,6 @@
         style: "color: #2895F1; text-decoration: none;"
       ),
       notification: User.human_attribute_name(:email_on_comment_reply)
-    )) %>
+    ), attributes: %w[href style]) %>
   </p>
 </td>