diff --git a/app/assets/stylesheets/application.css b/app/assets/stylesheets/application.css
index 3efd037..7f63099 100644
--- a/app/assets/stylesheets/application.css
+++ b/app/assets/stylesheets/application.css
@@ -1,51 +1,55 @@
 /*
  * This is a manifest file that'll be compiled into application.css, which will include all the files
  * listed below.
  *
  * Any CSS and SCSS file within this directory, lib/assets/stylesheets, vendor/assets/stylesheets,
  * or vendor/assets/stylesheets of plugins, if any, can be referenced here using a relative path.
  *
  * You're free to add application-wide styles to this file and they'll appear at the bottom of the
  * compiled file so the styles you add here take precedence over styles defined in any styles
  * defined in the other CSS/SCSS files in this directory. It is generally better to create a new
  * file per style scope.
  *
  *= require bootstrap.min
  *= require dataTables.bootstrap.min
  *= require bootstrap-editable
  *= require_tree .
  *= require_self
  */
 
 /* Make sure navbar does not overlay body */
 body {
   padding-top: 70px;
 }
 
 .highlight , .highlight>td {
     background-color: #b8e0b8 !important;
 }
 
 /* DataTable resets bootstrap's margin-bottom */
 .datatable-wrapper {
     margin-bottom: 20px;
 }
 
 /* Reset bootstrap's help cursor on control links */
 table a abbr[title] {
     cursor: pointer;
 }
 
 .tab-pane table {
     margin-top: 20px;
 }
 
 #inline-record-form #record_ttl {
     width: 80px;
 }
 #inline-record-form #record_prio {
     width: 80px;
 }
 #inline-record-form #record_content {
     width: 300px;
 }
+
+#domains span.glyphicon-volume-up {
+    color: red;
+}
diff --git a/app/controllers/domains_controller.rb b/app/controllers/domains_controller.rb
index 5c9903d..35f001f 100644
--- a/app/controllers/domains_controller.rb
+++ b/app/controllers/domains_controller.rb
@@ -1,104 +1,107 @@
+require 'set'
+
 class DomainsController < ApplicationController
   before_action :authenticate_user!
 
   before_action :domain, only: [:show, :edit, :edit_dnssec, :update, :destroy, :full_destroy]
   before_action :group,  only: [:show, :edit, :edit_dnssec, :update, :destroy, :full_destroy]
 
   helper_method :edit_group_scope
 
   # GET /domains
   def index
     @domains = show_domain_scope.includes(:group, :soa).all
+    @optouts = Set.new current_user.subscriptions.pluck(:domain_id)
   end
 
   # GET /domains/1
   def show
     @record = Record.new(domain_id: @domain.id)
   end
 
   # GET /domains/new
   def new
     @domain = Domain.new(new_domain_params)
   end
 
   # GET /domains/1/edit
   def edit
   end
 
   # GET /domains/1/edit_dnssec
   def edit_dnssec
   end
 
   # POST /domains
   def create
     @domain = Domain.new(domain_params)
 
     if @domain.save
       notify_domain(@domain, :create)
       redirect_to @domain, notice: "#{@domain.name} was successfully created."
     else
       render :new
     end
   end
 
   # PATCH/PUT /domains/1
   def update
     if @domain.update(domain_params)
       notify_domain(@domain, :update)
       redirect_to @domain, notice: "#{@domain.name} was successfully updated."
     else
       if domain_params[:dnssec] # DNSSEC form
         render :edit_dnssec
       else
         render :edit
       end
     end
   end
 
   # DELETE /domains/1
   def destroy
     if @domain.remove
       notify_domain(@domain, :destroy)
       redirect_to domains_url, notice: "#{@domain.name} is scheduled for removal."
     else
       redirect_to domains_url, alert: "#{@domain.name} cannot be deleted! (state '#{@domain.state}')"
     end
   end
 
   # DELETE /domains/1/full_destroy
   def full_destroy
     if @domain.full_remove
       notify_domain(@domain, :destroy)
       redirect_to domains_url,
                   notice: "#{@domain.name} is scheduled for full removal. DS records will be dropped from the parent zone before proceeding"
     else
       redirect_to domains_url, alert: "#{@domain.name} cannot be deleted! (state '#{@domain.state}')"
     end
   end
 
   private
 
   def group
     domain.group
   end
 
   def new_domain_params
     params.permit(:group_id)
   end
 
   def domain_params
     params.require(:domain).tap { |d|
       # Make sure group id is permitted (belongs to edit_group_scope)
       d[:group_id] = edit_group_scope.find_by_id(d[:group_id]).try(:id)
       # Sometimes domain name might contain whitespace, make sure we remove
       # them. Note that we use a regex to handle unicode whitespace characters as well.
       d[:name] = d[:name].gsub(/\p{Space}/, '') if d[:name]
     }.permit(:name, :type, :master, :group_id,
              :dnssec, :dnssec_parent, :dnssec_parent_authority, :dnssec_policy_id)
   end
 
   def notify_domain(*args)
     notification.notify_domain(current_user, *args) if WebDNS.settings[:notifications]
   end
 
 end
diff --git a/app/controllers/groups_controller.rb b/app/controllers/groups_controller.rb
index 0d0c3eb..d22f844 100644
--- a/app/controllers/groups_controller.rb
+++ b/app/controllers/groups_controller.rb
@@ -1,53 +1,54 @@
 class GroupsController < ApplicationController
   before_action :authenticate_user!
 
   before_action :group, only: [:show, :create_member, :destroy_member, :search_member]
   before_action :user, only: [:destroy_member]
 
   # GET /groups/1
   def show
     @domains = @group.domains
+    @optouts = Set.new current_user.subscriptions.where(domain_id: @domains).pluck(:domain_id)
   end
 
   # POST /groups/1/members/
   def create_member
     @user = User.find_by_email(params[:email])
     if !@user
       redirect_to group_path(@group, anchor: 'tab-members'), alert: "User '#{params[:email]}' not found!"
       return
     end
 
     membership = @group.memberships.find_or_create_by!(user_id: @user.id)
 
     redirect_to group_path(@group, anchor: 'tab-members'), notice: "#{membership.user.email} is now a member of #{@group.name}"
   end
 
   # DELETE /groups/1/member/1
   def destroy_member
     membership = @group.memberships.find_by!(user_id: user.id)
     membership.destroy!
 
     redirect_to @group, notice: "#{membership.user.email} was successfully removed from #{@group.name}"
   end
 
   def search_member
     results = []
 
     if params[:q].present?
       uids = group.users.pluck(:id)
       results = User
                 .where('email like ?', "#{params[:q]}%")
                 .where.not(id: uids) # Exclude group members
                 .limit(10)
     end
 
     render json: results.map { |r| Hash[:id, r.id, :email, r.email] }
   end
 
   private
 
   def user
     @user ||= User.find(params[:user_id])
   end
 
 end
diff --git a/app/controllers/users_controller.rb b/app/controllers/users_controller.rb
index ef79c33..01aae98 100644
--- a/app/controllers/users_controller.rb
+++ b/app/controllers/users_controller.rb
@@ -1,31 +1,48 @@
 class UsersController < ApplicationController
   before_action :authenticate_user!
 
-  before_action :user, only: [:token, :generate_token]
+  before_action :user, only: [:mute, :unmute, :token, :generate_token]
 
   # GET /users/1/token
   def token
   end
 
   # POST /users/1/generate_token
   def generate_token
     @user.token = SecureRandom.hex(10)
     @user.save!
 
     redirect_to token_user_path(@user)
   end
 
+  # PUT /users/1/unsubscribe/2
+  def mute
+    domain = show_domain_scope.find(params[:domain_id])
+    @user.subscriptions.find_or_create_by!(domain: domain)
+
+    redirect_to domains_url, notice: "Successfully unsubscribed from #{domain.name} notifications!"
+  end
+
+  # PUT /users/1/subscribe/2
+  def unmute
+    domain = show_domain_scope.find(params[:domain_id])
+    # Drop all opt-outs
+    @user.subscriptions.where(domain: domain).delete_all
+
+    redirect_to domains_url, notice: "Successfully subscribed to #{domain.name} notifications!"
+  end
+
   private
 
   def user
-    @user ||= User.find(params[:id])
+    @user ||= User.find(params[:user_id] || params[:id])
 
     # Guard access to other user tokens
     if current_user.id != @user.id && !admin?
       redirect_to(root_path, alert: 'You need admin rights for that!')
     end
 
     @user
   end
 
 end
diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index b48b410..7a7b4d0 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -1,57 +1,65 @@
 module ApplicationHelper
   TIME_PERIODS = {
     1.second => 'second',
     1.minute => 'minute',
     1.hour => 'hour',
     1.day => 'day',
     1.week => 'week',
     1.month => 'month',
     1.year.to_i => 'year',
   }
 
   def can_edit?(object)
     return true unless object.respond_to?(:editable?)
     by = admin? ? :admin : :user
 
     object.editable?(by)
   end
 
   def seconds_to_human(seconds)
     acc = {}
     remaining = seconds
     TIME_PERIODS.to_a.reverse_each do |p, human|
       period_count, remaining = remaining.divmod(p)
       acc[human] = period_count if not period_count.zero?
     end
 
     acc.map { |singular, count|
       human = count < 2 ? singular : "#{singular}s"
       "#{count} #{human}"
     }.join(', ')
   end
 
   def link_to_edit(*args, &block)
     link_to(abbr_glyph(:pencil, 'Edit'), *args, &block)
   end
 
   def link_to_destroy(*args, &block)
     link_to(abbr_glyph(:remove, 'Remove'), *args, &block)
   end
 
   def link_to_enable(*args, &block)
     link_to(abbr_glyph(:'eye-close', 'Enable'), *args, &block)
   end
 
   def link_to_disable(*args, &block)
     link_to(abbr_glyph(:'eye-open', 'Disable'), *args, &block)
   end
 
+  def link_to_mute(*args, &block)
+    link_to(abbr_glyph(:'volume-off', 'Disable notifications'), *args, &block)
+  end
+
+  def link_to_unmute(*args, &block)
+    link_to(abbr_glyph(:'volume-up', 'Renable notifications'), *args, &block)
+  end
+
   def glyph(icon)
     content_tag(:span, '', class: "glyphicon glyphicon-#{icon}")
   end
 
   def abbr_glyph(icon, title)
     content_tag(:abbr, glyph(icon), title: title)
   end
 
 end
diff --git a/app/views/domains/index.html.erb b/app/views/domains/index.html.erb
index a95799f..22beec0 100644
--- a/app/views/domains/index.html.erb
+++ b/app/views/domains/index.html.erb
@@ -1,56 +1,61 @@
 <% if current_user.memberships.empty? %>
   <div class="jumbotron">
     <h2>Wellcome to WebDNS!</h2>
     <p>
       In order to manage domains you have to be a member of a group.
     </p>
     <p>
       You can either contact an admin to create a new group for you, or ask another user for an invite to an existing group.
     </p>
   </div>
 <% end %>
 
 <div class="datatable-wrapper">
   <table id="domains" class="table table-striped">
     <thead>
       <tr>
         <th>Domain</th>
         <th>Serial</th>
         <th>Group</th>
         <th>State</th>
         <th>Slave</th>
         <th>DNSSEC</th>
         <th class="no-order-and-search">Controls</th>
       </tr>
     </thead>
 
     <tbody>
       <% @domains.group_by(&:group).each do |group, domains| %>
         <% domains.each do |domain| %>
           <tr class="group-<%= group.id =%>">
             <td><%= link_to domain.name, domain %></td>
             <td><%= domain.serial %></td>
             <td><%= link_to group.name, group_path(group) %></td>
             <td><%= human_state(domain.state) %></td>
             <td><%= domain.slave? ? domain.master : '-' %></td>
             <td><%= domain.dnssec? ? 'secure' : '-' %></td>
             <td>
               <%= link_to_edit edit_domain_path(domain) %>
+              <% if @optouts.include? domain.id %>
+                <%= link_to_unmute user_domain_unmute_path(current_user, domain), method: :put %>
+              <% else %>
+                <%= link_to_mute user_domain_mute_path(current_user, domain), method: :put %>
+              <% end %>
               <%= link_to_destroy domain, method: :delete, data: { confirm: 'Are you sure?' } if domain.can_remove? %>
               <%= link_to_full_destroy full_destroy_domain_path(domain),
               method: :delete, data: { confirm: 'Are you sure?' } if domain.can_remove? && domain.dnssec? %>
             </td>
           </tr>
         <% end %>
       <% end %>
     </tbody>
   </table>
 </div>
 
 <p>
   <% if current_user.memberships.any? %>
     <%= link_to 'Add Domain', new_domain_path, class: 'btn btn-primary' %>
   <% else %>
     <%= link_to 'Add Domain', new_domain_path, class: 'btn btn-primary disabled' %>
   <% end %>
 </p>
diff --git a/app/views/groups/show.html.erb b/app/views/groups/show.html.erb
index 7874355..d81de70 100644
--- a/app/views/groups/show.html.erb
+++ b/app/views/groups/show.html.erb
@@ -1,87 +1,92 @@
 <% content_for :more_breadcrumbs do %>
   <li>
     <%= link_to_edit edit_admin_group_path(@group) %>
     <%= link_to_destroy admin_group_path(@group), method: :delete, data: { confirm: 'Are you sure?' } %>
   </li>
 <% end if admin? %>
 
 <ul class="nav nav-tabs">
   <li role="presentation" class="active"><a id="tab-link-domains" data-toggle="tab" href="#domains_tab">Domains</a></li>
   <li role="presentation"><a id="tab-link-members" data-toggle="tab" href="#members_tab">Members</a></li>
 </ul>
 
 <div class="tab-content">
   <div role="tabpanel" class="tab-pane active" id="domains_tab">
     <table id="domains" class="table table-striped">
       <thead>
         <tr>
           <th>Domain</th>
           <th>Serial</th>
           <th>Group</th>
           <th>State</th>
           <th>Slave</th>
           <th>DNSSEC</th>
           <th class="no-order-and-search">Controls</th>
         </tr>
       </thead>
 
       <tbody>
         <% @domains.group_by(&:group).each do |group, domains| %>
           <% domains.each do |domain| %>
             <tr class="group-<%= group.id =%>">
               <td><%= link_to domain.name, domain %></td>
               <td><%= domain.serial %></td>
               <td><%= link_to group.name, group_path(group) %></td>
               <td><%= human_state(domain.state) %></td>
               <td><%= domain.slave? ? domain.master : '-' %></td>
               <td><%= domain.dnssec? ? 'secure' : '-' %></td>
               <td>
                 <%= link_to_edit edit_domain_path(domain) %>
+                <% if @optouts.include? domain.id %>
+                  <%= link_to_unmute user_domain_unmute_path(current_user, domain), method: :put %>
+                <% else %>
+                  <%= link_to_mute user_domain_mute_path(current_user, domain), method: :put %>
+                <% end %>
                 <%= link_to_destroy domain, method: :delete, data: { confirm: 'Are you sure?' } if domain.can_remove? %>
                 <%= link_to_full_destroy full_destroy_domain_path(domain),
                 method: :delete, data: { confirm: 'Are you sure?' } if domain.can_remove? && domain.dnssec? %>
               </td>
             </tr>
           <% end %>
         <% end %>
       </tbody>
     </table>
 
     <p>
       <% if current_user.memberships.any? %>
         <%= link_to 'Add Domain', new_domain_path(group_id: @group.id), class: 'btn btn-primary' %>
       <% else %>
         <%= link_to 'Add Domain', new_domain_path(group_id: @group.id), class: 'btn btn-primary disabled' %>
       <% end %>
     </p>
   </div>
 
   <div role="tabpanel" class="tab-pane" id="members_tab">
     <table class="table table-striped table-hover">
       <thead>
         <tr>
           <th>Member</th>
           <th>Controls</th>
         </tr>
       </thead>
 
       <tbody>
         <% @group.memberships.includes(:user).each do |membership| %>
           <tr>
             <td><%= membership.user.email %><%= " (you)" if current_user == membership.user %></td>
             <td>
               <%= link_to_destroy destroy_member_group_path(@group, membership.user_id), method: :delete %>
             </td>
           </tr>
         <% end %>
       </tbody>
     </table>
 
     <p>
       <%= bootstrap_form_tag(url: create_member_group_path(@group), layout: :inline) do |f| %>
         <%= f.text_field :email, prepend: 'Add Member', hide_label: true, id: 'js-search-member', data: { group: @group.id } %>
         <%= f.submit 'Add', class: 'btn btn-primary' %>
       <% end %>
     </p>
   </div>
 </div>
diff --git a/config/routes.rb b/config/routes.rb
index cb736ad..6c277dc 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1,82 +1,86 @@
 Rails.application.routes.draw do
   # Override devise user removal
   devise_scope :users do
     delete :users, to: redirect('/')
   end
   devise_for :users
   get '/auth/saml', to: 'auth#saml'
 
   root to: redirect('/domains')
 
   resources :users, only: [] do
     get :token, to: 'users#token', on: :member
     post :generate_token, to: 'users#generate_token', on: :member
+    resources :domains, only: [] do
+      put :mute, to: 'users#mute'
+      put :unmute, to: 'users#unmute'
+    end
   end
 
   resources :groups, only: [:show] do
     get :search_member,
         to: 'groups#search_member', on: :member
     post :members,
          to: 'groups#create_member', as: :create_member, on: :member
     delete 'member/:user_id',
            to: 'groups#destroy_member', as: :destroy_member, on: :member
   end
 
   resources :domains do
     get :edit_dnssec, to: 'domains#edit_dnssec', on: :member
     delete :full_destroy, to: 'domains#full_destroy', on: :member
 
     resources :records, except: [:index, :show] do
       # Reuse records#update instead of introducing new controller actions
       #
       # rubocop:disable Style/AlignHash
       put :disable, to: 'records#update', on: :member,
           defaults: { record: { disabled: true } }
       put :enable,  to: 'records#update', on: :member,
           defaults: { record: { disabled: false } }
 
       put :editable, to: 'records#editable', on: :collection
       post :valid, to: 'records#valid', on: :collection
       post :bulk, to: 'records#bulk', on: :collection
       # rubocop:enable Style/AlignHash
     end
   end
 
   get '/records/search', to: 'records#search'
 
   # Admin
   namespace :admin do
     root to: redirect('/admin/groups')
 
     resources :groups, except: [:show]
     resources :jobs, only: [:index, :destroy] do
       put :done, to: 'jobs#update', on: :member,
           defaults: { job: { status: 1 } }
       put :pending,  to: 'jobs#update', on: :member,
           defaults: { job: { status: 0 } }
       get '/type/:category', to: 'jobs#index', on: :collection,
           constraints: proc { |req| ['completed', 'pending'].include?(req.params[:category]) }
     end
     resources :users, only: [:destroy] do
       get :orphans, to: 'users#orphans', on: :collection
       put :update_groups, to: 'users#update_groups', on: :collection
     end
   end
 
   # API
   scope '/api' do
     get :ping, to: 'api#ping'
     get :whoami, to: 'api#whoami'
     get '/domain/:domain/list', to: 'api#list', constraints: { domain: /[^\/]+/}
     post '/domain/:domain/bulk', to: 'api#bulk', constraints: { domain: /[^\/]+/}
     get :domains, to: 'api#domains'
   end if WebDNS.settings[:api]
 
   # Private
   put 'private/replace_ds', to: 'private#replace_ds'
   put 'private/trigger_event', to: 'private#trigger_event'
   get 'private/zones', to: 'private#zones'
 
   get 'help/api', to: 'help#api'
 end