diff --git a/app/controllers/forum_topics_controller.rb b/app/controllers/forum_topics_controller.rb
index ce434e9fe..b91ac50fe 100644
--- a/app/controllers/forum_topics_controller.rb
+++ b/app/controllers/forum_topics_controller.rb
@@ -4,8 +4,8 @@ class ForumTopicsController < ApplicationController
   before_action :member_only, :except => [:index, :show]
   before_action :moderator_only, :only => [:new_merge, :create_merge]
   before_action :normalize_search, :only => :index
-  before_action :load_topic, :only => [:edit, :show, :update, :destroy, :undelete, :new_merge, :create_merge, :subscribe, :unsubscribe]
-  before_action :check_min_level, :only => [:show, :edit, :update, :new_merge, :create_merge, :destroy, :undelete, :subscribe, :unsubscribe]
+  before_action :load_topic, :only => [:edit, :show, :update, :destroy, :undelete, :new_merge, :create_merge]
+  before_action :check_min_level, :only => [:show, :edit, :update, :new_merge, :create_merge, :destroy, :undelete]
   skip_before_action :api_check
 
   def new
@@ -88,20 +88,6 @@ class ForumTopicsController < ApplicationController
     redirect_to forum_topic_path(@merged_topic)
   end
 
-  def subscribe
-    subscription = ForumSubscription.where(:forum_topic_id => @forum_topic.id, :user_id => CurrentUser.user.id).first
-    unless subscription
-      ForumSubscription.create(:forum_topic_id => @forum_topic.id, :user_id => CurrentUser.user.id, :last_read_at => @forum_topic.updated_at)
-    end
-    respond_with(@forum_topic)
-  end
-
-  def unsubscribe
-    subscription = ForumSubscription.where(:forum_topic_id => @forum_topic.id, :user_id => CurrentUser.user.id).first
-    subscription&.destroy
-    respond_with(@forum_topic)
-  end
-
   private
 
   def normalize_search
diff --git a/app/logical/danbooru_maintenance.rb b/app/logical/danbooru_maintenance.rb
index c0e349a1b..2fbe595b5 100644
--- a/app/logical/danbooru_maintenance.rb
+++ b/app/logical/danbooru_maintenance.rb
@@ -9,7 +9,6 @@ module DanbooruMaintenance
     safely { Upload.prune! }
     safely { Delayed::Job.where('created_at < ?', 45.days.ago).delete_all }
     safely { PostDisapproval.prune! }
-    safely { ForumSubscription.process_all! }
     safely { PostDisapproval.dmail_messages! }
     safely { regenerate_post_counts! }
     safely { SuperVoter.init! }
diff --git a/app/mailers/user_mailer.rb b/app/mailers/user_mailer.rb
index 00bdab9dc..ddbe65632 100644
--- a/app/mailers/user_mailer.rb
+++ b/app/mailers/user_mailer.rb
@@ -7,11 +7,4 @@ class UserMailer < ActionMailer::Base
     @dmail = dmail
     mail(:to => "#{dmail.to.name} <#{dmail.to.email}>", :subject => "#{Danbooru.config.app_name} - Message received from #{dmail.from.name}")
   end
-
-  def forum_notice(user, forum_topic, forum_posts)
-    @user = user
-    @forum_topic = forum_topic
-    @forum_posts = forum_posts
-    mail(:to => "#{user.name} <#{user.email}>", :subject => "#{Danbooru.config.app_name} forum topic #{forum_topic.title} updated")
-  end
 end
diff --git a/app/models/forum_subscription.rb b/app/models/forum_subscription.rb
deleted file mode 100644
index 07fd1d17f..000000000
--- a/app/models/forum_subscription.rb
+++ /dev/null
@@ -1,24 +0,0 @@
-class ForumSubscription < ApplicationRecord
-  belongs_to :user
-  belongs_to :forum_topic
-
-  def self.prune!
-    where("last_read_at < ?", 3.months.ago).delete_all
-  end
-
-  def self.process_all!
-    ForumSubscription.find_each do |subscription|
-      forum_topic = subscription.forum_topic
-      if forum_topic.updated_at > subscription.last_read_at
-        CurrentUser.scoped(subscription.user, "127.0.0.1") do
-          forum_posts = forum_topic.posts.where("created_at > ?", subscription.last_read_at).order("id desc")
-          begin
-            UserMailer.forum_notice(subscription.user, forum_topic, forum_posts).deliver_now
-          rescue Net::SMTPSyntaxError
-          end
-          subscription.update_attribute(:last_read_at, forum_topic.updated_at)
-        end
-      end
-    end
-  end
-end
diff --git a/app/models/forum_topic.rb b/app/models/forum_topic.rb
index 680001305..c2666fe7e 100644
--- a/app/models/forum_topic.rb
+++ b/app/models/forum_topic.rb
@@ -16,7 +16,6 @@ class ForumTopic < ApplicationRecord
   has_many :posts, -> {order("forum_posts.id asc")}, :class_name => "ForumPost", :foreign_key => "topic_id", :dependent => :destroy
   has_many :moderation_reports, through: :posts
   has_one :original_post, -> {order("forum_posts.id asc")}, class_name: "ForumPost", foreign_key: "topic_id", inverse_of: :topic
-  has_many :subscriptions, :class_name => "ForumSubscription"
   before_validation :initialize_is_deleted, :on => :create
   validates_presence_of :title
   validates_associated :original_post
@@ -126,16 +125,9 @@ class ForumTopic < ApplicationRecord
     end
   end
 
-  module SubscriptionMethods
-    def user_subscription(user)
-      subscriptions.where(:user_id => user.id).first
-    end
-  end
-
   extend SearchMethods
   include CategoryMethods
   include VisitMethods
-  include SubscriptionMethods
 
   def editable_by?(user)
     (creator_id == user.id || user.is_moderator?) && visible?(user)
diff --git a/app/views/forum_topics/_secondary_links.html.erb b/app/views/forum_topics/_secondary_links.html.erb
index d2aacbd89..715f0b694 100644
--- a/app/views/forum_topics/_secondary_links.html.erb
+++ b/app/views/forum_topics/_secondary_links.html.erb
@@ -18,11 +18,6 @@
   <% if CurrentUser.is_member? && @forum_topic && !@forum_topic.new_record? %>
     <li>|</li>
     <%= subnav_link_to "Reply", new_forum_post_path(:topic_id => @forum_topic.id) %>
-    <% if @forum_topic.user_subscription(CurrentUser.user) %>
-      <%= subnav_link_to "Unsubscribe", unsubscribe_forum_topic_path(@forum_topic), :method => :post %>
-    <% else %>
-      <%= subnav_link_to "Subscribe", subscribe_forum_topic_path(@forum_topic), :method => :post, :data => {:confirm => "Are you sure you want to receive email notifications for this forum topic?"} %>
-    <% end %>
     <% if !@forum_topic.new_record? && @forum_topic.editable_by?(CurrentUser.user) %>
       <%= subnav_link_to "Edit", edit_forum_topic_path(@forum_topic), "data-shortcut": "e" %>
       <% if CurrentUser.is_moderator? %>
diff --git a/app/views/user_mailer/forum_notice.html.erb b/app/views/user_mailer/forum_notice.html.erb
deleted file mode 100644
index 3a0243444..000000000
--- a/app/views/user_mailer/forum_notice.html.erb
+++ /dev/null
@@ -1,13 +0,0 @@
-<p>"<%= @forum_topic.title %>" was updated:</p>
-
-<% @forum_posts.each do |forum_post| %>
-  <p>
-    <strong><%= forum_post.creator.name %> said:</strong>
-  </p>
-  <%= format_text(forum_post.body, base_url: root_url) %>
-  <br>
-  <hr>
-  <br>
-<% end %>
-
-<p><%= link_to "View topic", forum_topic_url(@forum_topic, :page => @forum_topic.last_page, :host => Danbooru.config.hostname, :only_path => false) %> | <%= link_to "Unsubscribe", maintenance_user_email_notification_url(:user_id => @user.id, :sig => email_sig(@user), :host => Danbooru.config.hostname, :only_path => false) %></p>
diff --git a/config/routes.rb b/config/routes.rb
index 7bb4ae82b..84b1af4dd 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -142,8 +142,6 @@ Rails.application.routes.draw do
       post :undelete
       get :new_merge
       post :create_merge
-      post :subscribe
-      post :unsubscribe
     end
     collection do
       post :mark_all_as_read
diff --git a/db/migrate/20200119193110_drop_forum_subscriptions.rb b/db/migrate/20200119193110_drop_forum_subscriptions.rb
new file mode 100644
index 000000000..961929525
--- /dev/null
+++ b/db/migrate/20200119193110_drop_forum_subscriptions.rb
@@ -0,0 +1,7 @@
+require_relative "20140725003232_create_forum_subscriptions"
+
+class DropForumSubscriptions < ActiveRecord::Migration[6.0]
+  def change
+    revert CreateForumSubscriptions
+  end
+end
diff --git a/db/structure.sql b/db/structure.sql
index 3f524b6e9..31bec31a9 100644
--- a/db/structure.sql
+++ b/db/structure.sql
@@ -2014,38 +2014,6 @@ CREATE SEQUENCE public.forum_posts_id_seq
 ALTER SEQUENCE public.forum_posts_id_seq OWNED BY public.forum_posts.id;
 
 
---
--- Name: forum_subscriptions; Type: TABLE; Schema: public; Owner: -
---
-
-CREATE TABLE public.forum_subscriptions (
-    id integer NOT NULL,
-    user_id integer,
-    forum_topic_id integer,
-    last_read_at timestamp without time zone,
-    delete_key character varying
-);
-
-
---
--- Name: forum_subscriptions_id_seq; Type: SEQUENCE; Schema: public; Owner: -
---
-
-CREATE SEQUENCE public.forum_subscriptions_id_seq
-    START WITH 1
-    INCREMENT BY 1
-    NO MINVALUE
-    NO MAXVALUE
-    CACHE 1;
-
-
---
--- Name: forum_subscriptions_id_seq; Type: SEQUENCE OWNED BY; Schema: public; Owner: -
---
-
-ALTER SEQUENCE public.forum_subscriptions_id_seq OWNED BY public.forum_subscriptions.id;
-
-
 --
 -- Name: forum_topic_visits; Type: TABLE; Schema: public; Owner: -
 --
@@ -4040,13 +4008,6 @@ ALTER TABLE ONLY public.forum_post_votes ALTER COLUMN id SET DEFAULT nextval('pu
 ALTER TABLE ONLY public.forum_posts ALTER COLUMN id SET DEFAULT nextval('public.forum_posts_id_seq'::regclass);
 
 
---
--- Name: forum_subscriptions id; Type: DEFAULT; Schema: public; Owner: -
---
-
-ALTER TABLE ONLY public.forum_subscriptions ALTER COLUMN id SET DEFAULT nextval('public.forum_subscriptions_id_seq'::regclass);
-
-
 --
 -- Name: forum_topic_visits id; Type: DEFAULT; Schema: public; Owner: -
 --
@@ -4394,14 +4355,6 @@ ALTER TABLE ONLY public.forum_posts
     ADD CONSTRAINT forum_posts_pkey PRIMARY KEY (id);
 
 
---
--- Name: forum_subscriptions forum_subscriptions_pkey; Type: CONSTRAINT; Schema: public; Owner: -
---
-
-ALTER TABLE ONLY public.forum_subscriptions
-    ADD CONSTRAINT forum_subscriptions_pkey PRIMARY KEY (id);
-
-
 --
 -- Name: forum_topic_visits forum_topic_visits_pkey; Type: CONSTRAINT; Schema: public; Owner: -
 --
@@ -6425,20 +6378,6 @@ CREATE INDEX index_forum_posts_on_topic_id ON public.forum_posts USING btree (to
 CREATE INDEX index_forum_posts_on_updated_at ON public.forum_posts USING btree (updated_at);
 
 
---
--- Name: index_forum_subscriptions_on_forum_topic_id; Type: INDEX; Schema: public; Owner: -
---
-
-CREATE INDEX index_forum_subscriptions_on_forum_topic_id ON public.forum_subscriptions USING btree (forum_topic_id);
-
-
---
--- Name: index_forum_subscriptions_on_user_id; Type: INDEX; Schema: public; Owner: -
---
-
-CREATE INDEX index_forum_subscriptions_on_user_id ON public.forum_subscriptions USING btree (user_id);
-
-
 --
 -- Name: index_forum_topic_visits_on_forum_topic_id; Type: INDEX; Schema: public; Owner: -
 --
@@ -7426,6 +7365,7 @@ INSERT INTO "schema_migrations" (version) VALUES
 ('20200115010442'),
 ('20200117220602'),
 ('20200118015014'),
-('20200119184442');
+('20200119184442'),
+('20200119193110');
 
 
diff --git a/test/factories/forum_subscription.rb b/test/factories/forum_subscription.rb
deleted file mode 100644
index 62fa7203b..000000000
--- a/test/factories/forum_subscription.rb
+++ /dev/null
@@ -1,3 +0,0 @@
-FactoryBot.define do
-  factory(:forum_subscription)
-end
diff --git a/test/mailers/previews/user_mailer_preview.rb b/test/mailers/previews/user_mailer_preview.rb
index 326b665a5..ec87e1e02 100644
--- a/test/mailers/previews/user_mailer_preview.rb
+++ b/test/mailers/previews/user_mailer_preview.rb
@@ -3,12 +3,4 @@ class UserMailerPreview < ActionMailer::Preview
     dmail = User.admins.first.dmails.first
     UserMailer.dmail_notice(dmail)
   end
-
-  def forum_notice
-    topic = ForumTopic.first
-    posts = topic.posts
-    user = topic.creator
-
-    UserMailer.forum_notice(user, topic, posts)
-  end
 end