diff --git a/Gemfile b/Gemfile
index cac1de1..4c7d9c0 100644
--- a/Gemfile
+++ b/Gemfile
@@ -10,6 +10,7 @@ group :development do
     gem 'ruby-debug-base19', '0.11.23' if RUBY_VERSION.include? '1.9.1'
     gem 'ruby-debug19', :platforms => :ruby_19
     gem 'ruby-debug', :platforms => :mri_18
+    gem 'pry'
   end
 end
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 9b520e3..3f9e50e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -54,6 +54,7 @@ GEM
       xpath (~> 0.1.4)
     childprocess (0.3.0)
       ffi (~> 1.0.6)
+    coderay (1.0.8)
     columnize (0.3.6)
     diff-lcs (1.1.3)
     erubis (2.7.0)
@@ -78,6 +79,7 @@ GEM
       i18n (>= 0.4.0)
       mime-types (~> 1.16)
       treetop (~> 1.4.8)
+    method_source (0.8.1)
     mime-types (1.18)
     mongo (1.6.1)
       bson (~> 1.6.1)
@@ -88,6 +90,10 @@ GEM
     multi_json (1.0.4)
     nokogiri (1.5.0)
     polyglot (0.3.3)
+    pry (0.9.10)
+      coderay (~> 1.0.5)
+      method_source (~> 0.8)
+      slop (~> 3.3.1)
     rack (1.4.1)
     rack-cache (1.2)
       rack (>= 0.4)
@@ -149,6 +155,7 @@ GEM
       ffi (~> 1.0.9)
       multi_json (~> 1.0.4)
       rubyzip
+    slop (3.3.3)
     sprockets (2.1.2)
       hike (~> 1.2)
       rack (~> 1.0)
@@ -170,6 +177,7 @@ DEPENDENCIES
   capybara (>= 0.4.0)
   fabrication
   faker
+  pry
   rake
   rspec-rails
   ruby-debug
diff --git a/app/models/whoops/filter.rb b/app/models/whoops/filter.rb
index db45fad..b82da0c 100644
--- a/app/models/whoops/filter.rb
+++ b/app/models/whoops/filter.rb
@@ -7,6 +7,8 @@ class Whoops::Filter
   FILTERED_FIELDS.each do |document_field|
     field document_field, :type => Array
   end
+
+  belongs_to :filterable, :polymorphic => true
     
   def to_query_document
     doc = attributes.except(:_id, "_id").delete_if{|k, v| v.blank?}
@@ -18,6 +20,16 @@ def to_query_document
     end
   end
 
+  def matches_event_group?(event_group)
+    FILTERED_FIELDS.all? do |field|
+      if self.send(field).blank?
+        true
+      else
+        /^(#{self.send(field).join("|")})$/ =~ event_group.send(field)
+      end
+    end
+  end
+
   class << self
     def new_from_params(params)
       if params
diff --git a/app/models/whoops/notification_subscription.rb b/app/models/whoops/notification_subscription.rb
new file mode 100644
index 0000000..18fff2a
--- /dev/null
+++ b/app/models/whoops/notification_subscription.rb
@@ -0,0 +1,27 @@
+class Whoops::NotificationSubscription
+  include Mongoid::Document
+
+  has_one :filter, :as => :filterable, :class_name => "Whoops::Filter"
+  validates_presence_of :email
+  
+  field :email, :type => String
+
+  before_save :downcase_email
+  
+  def downcase_email
+    self.email.downcase!
+  end
+
+  class Matcher
+    attr_accessor :event_group
+    
+    # @param [ Whoops::EventGroup ]
+    def initialize(event_group)
+      self.event_group = event_group
+    end
+    
+    def matching_emails
+      Whoops::NotificationSubscription.all.select{ |ns| ns.filter.matches_event_group?(self.event_group) }.collect(&:email)
+    end
+  end
+end
diff --git a/app/views/notification_subscriptions/index.html.haml b/app/views/notification_subscriptions/index.html.haml
index b5c0a56..88bd313 100644
--- a/app/views/notification_subscriptions/index.html.haml
+++ b/app/views/notification_subscriptions/index.html.haml
@@ -4,18 +4,11 @@
   .space
     = render :partial => "form"
 
-
-
 %table
   %tr
     %th Email Address
     %th Services to Monitor
     %th
   
-  - @notification_rules.each do |nr|
-    %tr
-      %td= nr.email
-      %td= nr.matchers.sort.join(", ")
-      %td= link_to "update", edit_whoops_notification_rule_path(nr)
 
       
\ No newline at end of file
diff --git a/spec/models/whoops/filter_spec.rb b/spec/models/whoops/filter_spec.rb
index 19befbe..c540fcc 100644
--- a/spec/models/whoops/filter_spec.rb
+++ b/spec/models/whoops/filter_spec.rb
@@ -8,4 +8,22 @@
       keys.should_not include("_id")
     end
   end
+
+  describe "#matches_event_group?" do
+    let(:filter) { Whoops::Filter.new(:service => ["app.web"]) }
+    let(:event_group) { Whoops::EventGroup.new(:service => "app.web", :event_type => "info") }
+    it "should match an event group when the filters match the event group fields" do
+      filter.matches_event_group?(event_group).should be_true
+    end
+
+    it "should match .* filters" do
+      filter.service = ["app.*"]
+      filter.matches_event_group?(event_group).should be_true
+    end
+
+    it "should not match an event group when the filters are not equal to the event group fields" do
+      filter.service = ["app.queue"]
+      filter.matches_event_group?(event_group).should be_false
+    end
+  end
 end
diff --git a/spec/models/whoops/notification_subscription_spec.rb b/spec/models/whoops/notification_subscription_spec.rb
new file mode 100644
index 0000000..311c8e6
--- /dev/null
+++ b/spec/models/whoops/notification_subscription_spec.rb
@@ -0,0 +1,33 @@
+require 'spec_helper'
+
+describe Whoops::NotificationSubscription do
+  let(:subscription) { 
+    Whoops::NotificationSubscription.create(
+      :email => "Daniel@Higginbotham.com",
+      :filter => Whoops::Filter.new(:service => ["test.*"])
+    )
+  }
+  let(:event_params){ Whoops::Spec::ATTRIBUTES[:event_params] }
+  let(:event){ Whoops::Event.record(event_params) }
+  let(:event_group){ event.event_group }
+  
+  it "downcases the email on save" do
+    subscription.email.should == "daniel@higginbotham.com"
+  end
+
+  describe Whoops::NotificationSubscription::Matcher do
+    let(:matcher){ Whoops::NotificationSubscription::Matcher.new(event_group) }
+    
+    it "should return the email addresses of subscriptions whose filters match an event group" do
+      subscription.filter.save
+
+      nomatch = Whoops::NotificationSubscription.create(
+        :email => "does_not@match.com",
+        :filter => Whoops::Filter.new(:service => ["not_test.*"])
+        )
+      nomatch.filter.save
+      
+      matcher.matching_emails.should == ["daniel@higginbotham.com"]
+    end
+  end
+end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 29ba8df..c0af3d6 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -5,6 +5,7 @@
 require "rails/test_help"
 require "rspec/rails"
 require "fabrication"
+require "pry"
 
 ActionMailer::Base.delivery_method = :test
 ActionMailer::Base.perform_deliveries = true