diff --git a/app/e11sync/settings.py b/app/e11sync/settings.py
index 468ed94..886a117 100644
--- a/app/e11sync/settings.py
+++ b/app/e11sync/settings.py
@@ -14,11 +14,15 @@ DEBUG = True
 
 ALLOWED_HOSTS = []
 
+INTERNAL_IPS = ["127.0.0.1"]
+
 # Application definition
 
 INSTALLED_APPS = [
+    'debug_toolbar',
     'compressor',
     'signup.apps.SignupConfig',
+ 
     'django.contrib.admin',
     'django.contrib.auth',
     'django.contrib.contenttypes',
@@ -28,6 +32,8 @@ INSTALLED_APPS = [
 ]
 
 MIDDLEWARE = [
+    'debug_toolbar.middleware.DebugToolbarMiddleware',
+
     'django.middleware.security.SecurityMiddleware',
     'django.contrib.sessions.middleware.SessionMiddleware',
     'django.middleware.common.CommonMiddleware',
diff --git a/app/e11sync/urls.py b/app/e11sync/urls.py
index 1156d5b..5e21633 100644
--- a/app/e11sync/urls.py
+++ b/app/e11sync/urls.py
@@ -20,5 +20,6 @@ from django.urls import include, path
 
 urlpatterns = [
     path('admin/', admin.site.urls),
+    path("__debug__/", include("debug_toolbar.urls")),
     path('', include('signup.urls')),
 ]
diff --git a/app/signup/templates/signup/index.html b/app/signup/templates/signup/index.html
index 9d1855e..db3dc1b 100644
--- a/app/signup/templates/signup/index.html
+++ b/app/signup/templates/signup/index.html
@@ -78,9 +78,7 @@
     <fieldset>
       {% csrf_token %}
 
-      {% if error_message %}
-        <span class="pure-form-message message-error">{{ error_message }}</span>
-      {% elif request.GET.success %}
+      {% if request.GET.success %}
         <span class="pure-form-message message-success">
           {% if request.GET.already_subscribed %}
             Looks like you were already subscribed. We share your excitement!
@@ -88,11 +86,21 @@
             You are now subscribed!
           {% endif %}
         </span>
+      {% else %}
+        {% if error_message %}
+          <span class="pure-form-message message-error">{{ error_message }}</span>
+        {% endif %}
+        <input type="email"
+               class="subscribe-email"
+               name="email"
+               id="email"
+               {% if request.POST.email %}value="{{ request.POST.email }}"{% endif %}
+               placeholder="your@email.com"
+               required
+               />
+        <button type="submit" class="pure-button pure-button-primary">Inform Me</button>
       {% endif %}
 
-      <input type="email" class="subscribe-email" name="email" id="email" placeholder="your@email.com" required />
-
-      <button type="submit" class="pure-button pure-button-primary">Inform Me</button>
     </fieldset>
   </form>
 </section>
diff --git a/app/signup/tests.py b/app/signup/tests.py
index 47f7df2..34140bc 100644
--- a/app/signup/tests.py
+++ b/app/signup/tests.py
@@ -1,14 +1,15 @@
 from django.test import TestCase, Client
-
 from django.urls import reverse
 
-def SignupViewTests(TestCase):
+from .models import Signup
+
+class SignupViewTest(TestCase):
     def setUp(self):
         self.client = Client()
 
     def test_index(self):
         resp = self.client.get(reverse("index"))
-        self.assertEqual(response.status_code, 200)
+        self.assertEqual(resp.status_code, 200)
         self.assertContains(resp, "11sync is a privacy-respecting way")
 
     def test_ok_signup(self):
@@ -16,6 +17,6 @@ def SignupViewTests(TestCase):
                                 follow = True,
                                 HTTP_USER_AGENT = "foo-agent",
                                 REMOTE_ADDR = "127.0.0.2")
-        self.assertEqual(resp.redirect_chain, ('http://testserver/?success', 302))
+        self.assertEqual(resp.redirect_chain, [('/?success', 302)])
+        #print(str(resp.content).replace('\\n', '\n'))
         self.assertContains(resp, "You are now subscribed!")
-
diff --git a/app/signup/views.py b/app/signup/views.py
index e3c70ca..7ac4e1d 100644
--- a/app/signup/views.py
+++ b/app/signup/views.py
@@ -1,6 +1,7 @@
 import logging
 
 from django.shortcuts import render, redirect
+from django.urls import reverse
 from django.db import IntegrityError
 
 from lib.anonymize_ip import anonymize_ip
@@ -20,7 +21,7 @@ def index(request):
             ip = request.META.get('REMOTE_ADDR')
         anonymous_ip = anonymize_ip(ip)
 
-        e = Email(
+        e = Signup(
           email = request.POST.get("email"),
           anonymized_ip = anonymous_ip,
           user_agent = request.META["HTTP_USER_AGENT"],
@@ -37,12 +38,12 @@ def index(request):
             e.save()
         except IntegrityError:
             # email already registered, presumably
-            return redirect("index") + "?already_subscribed"
+            return redirect(reverse("index") + "?already_subscribed")
         except DatabaseError:
             logger.exception("database error when registering an email")
             err =  "Sorry, database error. Please come back later."
             return render(request, "signup/index.html",
                           {"error_message": err})
-        return redirect("index") + "?success"
+        return redirect(reverse("index") + "?success")
 
     return render(request, "signup/index.html", {})
diff --git a/flake.nix b/flake.nix
index 7547249..5c18893 100644
--- a/flake.nix
+++ b/flake.nix
@@ -18,6 +18,7 @@
       pkgs = import nixpkgs {inherit system;};
       devDeps = with pkgs; [
         python3Packages.django_5
+        python3Packages.django-debug-toolbar
         python3Packages.django-compressor
         dart-sass