diff --git a/app/controllers/dmails_controller.rb b/app/controllers/dmails_controller.rb
index c06f5b651..be3141019 100644
--- a/app/controllers/dmails_controller.rb
+++ b/app/controllers/dmails_controller.rb
@@ -41,6 +41,12 @@ class DmailsController < ApplicationController
     redirect_to dmails_path, :notice => "Message destroyed"
   end
   
+  def mark_all_as_read
+    Dmail.visible.unread.each do |x|
+      x.update_column(:is_read, true)
+    end
+  end
+  
 private
   def check_privilege(dmail)
     if !dmail.visible_to?(CurrentUser.user)
diff --git a/app/views/dmails/_secondary_links.html.erb b/app/views/dmails/_secondary_links.html.erb
index 3534b0552..559277969 100644
--- a/app/views/dmails/_secondary_links.html.erb
+++ b/app/views/dmails/_secondary_links.html.erb
@@ -4,5 +4,6 @@
     <li><%= link_to "Sent", dmails_path(:search => {:owner_id => CurrentUser.id, :from_id => CurrentUser.id}, :folder => "sent") %></li>
     <li><%= link_to "New", new_dmail_path %></li>
     <li><%= link_to "Search", search_dmails_path %></li>
+    <li><%= link_to "Mark all as read", {:controller => "dmails", :action => "mark_all_as_read"}, :method => :post, :remote => true %></li>
   </menu>
 <% end %>
diff --git a/app/views/dmails/mark_all_as_read.js.erb b/app/views/dmails/mark_all_as_read.js.erb
new file mode 100644
index 000000000..345366b9b
--- /dev/null
+++ b/app/views/dmails/mark_all_as_read.js.erb
@@ -0,0 +1 @@
+location.reload();
diff --git a/config/routes.rb b/config/routes.rb
index 8e83931bd..88f44f2b2 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -72,6 +72,7 @@ Danbooru::Application.routes.draw do
   resources :dmails do
     collection do
       get :search
+      post :mark_all_as_read
     end
   end
   resource  :dtext_preview, :only => [:create]