diff --git a/Gemfile.lock b/Gemfile.lock
index 9c895ad..9791985 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -3,28 +3,35 @@ PATH
   specs:
     ruby-pardot (1.3.2)
       crack (= 0.4.3)
-      httparty (= 0.13.1)
+      httparty (= 0.18.0)
 
 GEM
   remote: http://rubygems.org/
   specs:
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
-    diff-lcs (1.1.2)
+    diff-lcs (1.3)
     fakeweb (1.3.0)
-    httparty (0.13.1)
-      json (~> 1.8)
+    httparty (0.18.0)
+      mime-types (~> 3.0)
       multi_xml (>= 0.5.2)
-    json (1.8.6)
+    mime-types (3.3.1)
+      mime-types-data (~> 3.2015)
+    mime-types-data (3.2019.1009)
     multi_xml (0.6.0)
-    rspec (2.5.0)
-      rspec-core (~> 2.5.0)
-      rspec-expectations (~> 2.5.0)
-      rspec-mocks (~> 2.5.0)
-    rspec-core (2.5.1)
-    rspec-expectations (2.5.0)
-      diff-lcs (~> 1.1.2)
-    rspec-mocks (2.5.0)
+    rspec (3.9.0)
+      rspec-core (~> 3.9.0)
+      rspec-expectations (~> 3.9.0)
+      rspec-mocks (~> 3.9.0)
+    rspec-core (3.9.1)
+      rspec-support (~> 3.9.1)
+    rspec-expectations (3.9.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.9.0)
+    rspec-mocks (3.9.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.9.0)
+    rspec-support (3.9.2)
     safe_yaml (1.0.5)
 
 PLATFORMS
@@ -37,4 +44,4 @@ DEPENDENCIES
   ruby-pardot!
 
 BUNDLED WITH
-   2.0.2
+   2.1.4
diff --git a/lib/pardot/objects/emails.rb b/lib/pardot/objects/emails.rb
index f3ffe69..a49d861 100644
--- a/lib/pardot/objects/emails.rb
+++ b/lib/pardot/objects/emails.rb
@@ -21,6 +21,10 @@ def send_to_prospect prospect_id, params
           post "/do/send/prospect_id/#{prospect_id}", params
         end
 
+        def send_to_prospect_email prospect_email, params
+          post "/do/send/prospect_email/#{prospect_email}", params
+        end
+
         def send_to_list params
           post "/do/send", params
         end
diff --git a/ruby-pardot.gemspec b/ruby-pardot.gemspec
index 4e46b42..b271362 100644
--- a/ruby-pardot.gemspec
+++ b/ruby-pardot.gemspec
@@ -15,7 +15,7 @@ Gem::Specification.new do |s|
   s.rubyforge_project         = "ruby-pardot"
 
   s.add_dependency "crack", "0.4.3"
-  s.add_dependency "httparty", "0.13.1"
+  s.add_dependency "httparty", "0.18.0"
 
   s.add_development_dependency "bundler", ">= 1.10"
   s.add_development_dependency "rspec"
diff --git a/spec/pardot/objects/emails_spec.rb b/spec/pardot/objects/emails_spec.rb
index d16391b..3c08b2d 100644
--- a/spec/pardot/objects/emails_spec.rb
+++ b/spec/pardot/objects/emails_spec.rb
@@ -30,6 +30,12 @@ def sample_response
     assert_authorization_header
   end
 
+  it 'should send to a prospect email' do
+    fake_post '/api/email/version/3/do/send/prospect_email/test@email.com?campaign_id=765&email_template_id=86&format=simple', sample_response
+    @client.emails.send_to_prospect_email('test@email.com', :campaign_id => 765, :email_template_id => 86).should == {"name" => "My Email"}
+    assert_authorization_header
+  end
+
   it 'should send to a list' do
     fake_post '/api/email/version/3/do/send?email_template_id=200&list_ids[]=235&campaign_id=654&format=simple', sample_response
     @client.emails.send_to_list(:email_template_id => 200, 'list_ids[]' => 235, :campaign_id => 654).should == {"name" => "My Email"}