diff --git a/Gemfile b/Gemfile
index 41c590912..77e28931b 100644
--- a/Gemfile
+++ b/Gemfile
@@ -46,6 +46,7 @@ gem 'oauth2'
 gem 'bootsnap'
 gem 'addressable'
 gem 'httparty'
+gem 'rakismet'
 
 # needed for looser jpeg header compat
 gem 'ruby-imagespec', :require => "image_spec", :git => "https://github.com/r888888888/ruby-imagespec.git", :branch => "exif-fixes"
diff --git a/Gemfile.lock b/Gemfile.lock
index 0b9e21c4b..bd565cc45 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -277,6 +277,7 @@ GEM
       thor (>= 0.18.1, < 2.0)
     raindrops (0.17.0)
     rake (12.0.0)
+    rakismet (1.5.4)
     ref (2.0.0)
     representable (2.3.0)
       uber (~> 0.0.7)
@@ -432,6 +433,7 @@ DEPENDENCIES
   pry-byebug
   radix62 (~> 1.0.1)
   rails (~> 4.2.0)
+  rakismet
   responders
   rmagick
   ruby-imagespec!
diff --git a/app/controllers/dmails_controller.rb b/app/controllers/dmails_controller.rb
index 1ffc2abf5..9483e333b 100644
--- a/app/controllers/dmails_controller.rb
+++ b/app/controllers/dmails_controller.rb
@@ -1,6 +1,7 @@
 class DmailsController < ApplicationController
   respond_to :html, :xml, :json
   before_filter :member_only, except: [:index, :show, :destroy, :mark_all_as_read]
+  before_filter :gold_only, only: [:ham, :spam]
 
   def new
     if params[:respond_to_id]
@@ -55,6 +56,18 @@ class DmailsController < ApplicationController
     CurrentUser.user.save
   end
 
+  def spam
+    @dmail = Dmail.find(params[:id])
+    @dmail.update_column(:is_spam, true)
+    @dmail.spam!
+  end
+
+  def ham
+    @dmail = Dmail.find(params[:id])
+    @dmail.update_column(:is_spam, false)
+    @dmail.ham!
+  end
+
 private
 
   def check_privilege(dmail)
diff --git a/app/helpers/dmails_helper.rb b/app/helpers/dmails_helper.rb
index 3e700b95d..a61ac948a 100644
--- a/app/helpers/dmails_helper.rb
+++ b/app/helpers/dmails_helper.rb
@@ -18,6 +18,10 @@ module DmailsHelper
     dmails_path(search: {from_id: CurrentUser.id}, folder: "sent", **params)
   end
 
+  def spam_dmails_path
+    dmails_path(search: {to_id: CurrentUser.id, is_spam: true}, folder: "spam")
+  end
+
   def received_dmails_path(params = {})
     dmails_path(search: {to_id: CurrentUser.id}, folder: "received", **params)
   end
diff --git a/app/models/dmail.rb b/app/models/dmail.rb
index 02f6d8141..93288c21a 100644
--- a/app/models/dmail.rb
+++ b/app/models/dmail.rb
@@ -1,6 +1,8 @@
 require 'digest/sha1'
 
 class Dmail < ApplicationRecord
+  include Rakismet::Model
+
   with_options on: :create do
     validates_presence_of :to_id
     validates_presence_of :from_id
@@ -18,6 +20,18 @@ class Dmail < ApplicationRecord
   after_create :update_recipient
   after_create :send_dmail
 
+  rakismet_attrs author: :from_name, author_email: :from_email, content: :title_and_body, user_ip: :creator_ip_addr_str
+
+  concerning :SpamMethods do
+    def title_and_body
+      "#{title}\n\n#{body}"
+    end
+
+    def creator_ip_addr_str
+      creator_ip_addr.to_s
+    end
+  end
+
   module AddressMethods
     def to_name
       User.id_to_pretty_name(to_id)
@@ -27,6 +41,10 @@ class Dmail < ApplicationRecord
       User.id_to_pretty_name(from_id)
     end
 
+    def from_email
+      from.email
+    end
+
     def to_name=(name)
       self.to_id = User.name_to_id(name)
     end
@@ -34,6 +52,8 @@ class Dmail < ApplicationRecord
     def initialize_attributes
       self.from_id ||= CurrentUser.id
       self.creator_ip_addr ||= CurrentUser.ip_addr
+      self.is_spam = spam?
+      true
     end
   end
 
@@ -160,6 +180,12 @@ class Dmail < ApplicationRecord
         q = q.where("from_id = ?", params[:from_id].to_i)
       end
 
+      if params[:is_spam].present?
+        q = q.where("is_spam = ?", true)
+      else
+        q = q.where("is_spam = ?", false)
+      end
+
       if params[:read] == "true"
         q = q.where("is_read = true")
       elsif params[:read] == "false"
@@ -189,7 +215,7 @@ class Dmail < ApplicationRecord
   end
 
   def send_dmail
-    if to.receive_email_notifications? && to.email =~ /@/ && owner_id == to.id
+    if !is_spam? && to.receive_email_notifications? && to.email =~ /@/ && owner_id == to.id
       UserMailer.dmail_notice(self).deliver_now
     end
   end
@@ -230,5 +256,4 @@ class Dmail < ApplicationRecord
   def visible_to?(user, key)
     owner_id == user.id || (user.is_moderator? && key == self.key)
   end
-
 end
diff --git a/app/views/dmails/_secondary_links.html.erb b/app/views/dmails/_secondary_links.html.erb
index 59c205b62..c1f3debb5 100644
--- a/app/views/dmails/_secondary_links.html.erb
+++ b/app/views/dmails/_secondary_links.html.erb
@@ -4,6 +4,7 @@
     <li><%= link_to "All", all_dmails_path(set_default_folder: true) %></li>
     <li><%= link_to "Received", received_dmails_path(set_default_folder: true) %></li>
     <li><%= link_to "Sent", sent_dmails_path(set_default_folder: true) %></li>
+    <li><%= link_to "Spam", spam_dmails_path %></li>
     <li>|</li>
     <li><%= link_to "New", new_dmail_path %></li>
     <li><%= link_to "Mark all as read", {:controller => "dmails", :action => "mark_all_as_read"}, :method => :post, :remote => true %></li>
diff --git a/app/views/dmails/ham.js.erb b/app/views/dmails/ham.js.erb
new file mode 100644
index 000000000..2912c6f60
--- /dev/null
+++ b/app/views/dmails/ham.js.erb
@@ -0,0 +1 @@
+Danbooru.notice("Message marked as not spam");
\ No newline at end of file
diff --git a/app/views/dmails/show.html.erb b/app/views/dmails/show.html.erb
index 0600a0b1e..cc3db5d13 100644
--- a/app/views/dmails/show.html.erb
+++ b/app/views/dmails/show.html.erb
@@ -29,6 +29,13 @@
         | <%= link_to "Forward", new_dmail_path(:respond_to_id => @dmail, :forward => true) %>
         | <%= link_to "Filter messages like these", edit_maintenance_user_dmail_filter_path(:dmail_id => @dmail.id) %>
         | <%= link_to "Permalink", dmail_path(@dmail, :key => @dmail.key), :title => "Use this URL to privately share with a moderator" %>
+        <% if CurrentUser.is_gold? %>
+          <% if @dmail.is_spam? %>
+            | <%= link_to "Not spam", ham_dmail_path(@dmail) %>
+          <% else %>
+            | <%= link_to "Mark as spam", spam_dmail_path(@dmail) %>
+          <% end %>
+        <% end %>
       </p>
     </div>
   </div>
diff --git a/app/views/dmails/spam.js.erb b/app/views/dmails/spam.js.erb
new file mode 100644
index 000000000..b0002deb8
--- /dev/null
+++ b/app/views/dmails/spam.js.erb
@@ -0,0 +1 @@
+Danbooru.notice("Message marked as spam");
\ No newline at end of file
diff --git a/config/application.rb b/config/application.rb
index b5627814a..4fa9af05c 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -30,6 +30,11 @@ module Danbooru
       config.x.git_hash = nil
     end
 
+    if ENV["DANBOORU_RAKISMET_KEY"]
+      config.rakismet.key = ENV["DANBOORU_RAKISMET_KEY"]
+      config.rakismet.url = ENV["DANBOORU_RAKISMET_URL"]
+    end
+
     config.after_initialize do
       Rails.application.routes.default_url_options = {
         host: Danbooru.config.hostname,
diff --git a/config/routes.rb b/config/routes.rb
index 3a1e57cde..fb9a00372 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -117,6 +117,10 @@ Rails.application.routes.draw do
     end
   end
   resources :dmails, :only => [:new, :create, :index, :show, :destroy] do
+    member do
+      post :spam
+      post :ham
+    end
     collection do
       post :mark_all_as_read
     end
diff --git a/db/migrate/20170914200122_add_is_spam_to_dmails.rb b/db/migrate/20170914200122_add_is_spam_to_dmails.rb
new file mode 100644
index 000000000..d7aa83142
--- /dev/null
+++ b/db/migrate/20170914200122_add_is_spam_to_dmails.rb
@@ -0,0 +1,7 @@
+class AddIsSpamToDmails < ActiveRecord::Migration
+  def change
+  	Dmail.without_timeout do
+	    add_column :dmails, :is_spam, :boolean, default: false
+	  end
+  end
+end
diff --git a/db/structure.sql b/db/structure.sql
index cba8d3098..6536a87a9 100644
--- a/db/structure.sql
+++ b/db/structure.sql
@@ -1009,7 +1009,8 @@ CREATE TABLE dmails (
     is_deleted boolean DEFAULT false NOT NULL,
     created_at timestamp without time zone,
     updated_at timestamp without time zone,
-    creator_ip_addr inet NOT NULL
+    creator_ip_addr inet NOT NULL,
+    is_spam boolean DEFAULT false
 );
 
 
@@ -7513,3 +7514,5 @@ INSERT INTO schema_migrations (version) VALUES ('20170613200356');
 
 INSERT INTO schema_migrations (version) VALUES ('20170709190409');
 
+INSERT INTO schema_migrations (version) VALUES ('20170914200122');
+
diff --git a/test/unit/dmail_test.rb b/test/unit/dmail_test.rb
index b97b4aacf..120f20567 100644
--- a/test/unit/dmail_test.rb
+++ b/test/unit/dmail_test.rb
@@ -15,6 +15,19 @@ class DmailTest < ActiveSupport::TestCase
       CurrentUser.user = nil
     end
 
+    context "spam" do
+      setup do
+        @recipient = FactoryGirl.create(:user)
+      end
+
+      should "not validate" do
+        assert_difference("Dmail.count", 2)do
+          dmail = Dmail.create_split(:to_id => @recipient.id, :title => "My video", :body => "hey Noneeditsonlyme.  My webcam see here http://bit.ly/2vTv9Ki")
+          assert(dmail.is_spam?)
+        end
+      end
+    end
+
     context "filter" do
       setup do
         @recipient = FactoryGirl.create(:user)