diff --git a/gratipay/testing/harness.py b/gratipay/testing/harness.py
index fb9da6c765..379691cc10 100644
--- a/gratipay/testing/harness.py
+++ b/gratipay/testing/harness.py
@@ -181,7 +181,8 @@ def make_team(self, *a, **kw):
         return team
 
 
-    def make_package(self, package_manager, name, description, emails):
+    def make_package(self, package_manager='npm', name='foo', description='Foo',
+                                                                     emails=['alice@example.com']):
         """Factory for packages.
         """
         self.db.one( 'INSERT INTO packages (package_manager, name, description, emails) '
diff --git a/tests/py/test_www_npm_package.py b/tests/py/test_www_npm_package.py
index 1e7fa6527a..35645f49b2 100644
--- a/tests/py/test_www_npm_package.py
+++ b/tests/py/test_www_npm_package.py
@@ -7,7 +7,7 @@
 class TestClaimingWorkflow(Harness):
 
     def setUp(self):
-        self.make_package('npm', 'foo', 'The foo package', ['alice@example.com'])
+        self.make_package()
 
     def test_anon_gets_signin_page_from_unclaimed(self):
         body = self.client.GET('/on/npm/foo/').body
diff --git a/tests/ttw/test_package_claiming.py b/tests/ttw/test_package_claiming.py
new file mode 100644
index 0000000000..4d6a9b7c86
--- /dev/null
+++ b/tests/ttw/test_package_claiming.py
@@ -0,0 +1,17 @@
+# -*- coding: utf-8 -*-
+from __future__ import absolute_import, division, print_function, unicode_literals
+
+from gratipay.testing import BrowserHarness
+
+
+class Tests(BrowserHarness):
+
+    def test_sending_a_confirmation_email_works(self):
+        self.make_package()
+        self.make_participant('alice', claimed_time='now')
+        self.sign_in('alice')
+        self.visit('/on/npm/foo/')
+        self.css('input[type=radio]').click()
+        self.css('button').click()
+        assert self.has_element('.notification.notification-success', 1)
+        assert self.has_text('A confirmation email has been sent')
diff --git a/www/on/npm/%package/index.html.spt b/www/on/npm/%package/index.html.spt
index c900d060a7..550dfced34 100644
--- a/www/on/npm/%package/index.html.spt
+++ b/www/on/npm/%package/index.html.spt
@@ -43,7 +43,7 @@ url = 'https://npmjs.com/package/' + package.name
     <form action="" method="POST">
         <input type="hidden" name="csrf_token" value="{{ csrf_token }}">
         <ul>
-            {% for email in emails %}
+            {% for email in package.emails %}
             <li><input type="radio" name="email"> {{ email }}</li>
             {% endfor %}
         </ul>