diff --git a/freedoi/accounts/management/__init__.py b/freedoi/accounts/management/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/freedoi/accounts/management/commands/__init__.py b/freedoi/accounts/management/commands/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/freedoi/accounts/management/commands/delete_inactive_users.py b/freedoi/accounts/management/commands/delete_inactive_users.py
new file mode 100644
index 0000000..ed933ea
--- /dev/null
+++ b/freedoi/accounts/management/commands/delete_inactive_users.py
@@ -0,0 +1,14 @@
+import datetime
+from django.core.management.base import BaseCommand
+from django.utils import timezone
+from accounts.models import CustomUser
+
+class Command(BaseCommand):
+    help = 'Deletes inactive user accounts that were created more than 7 days ago'
+
+    def handle(self, *args, **kwargs):
+        expiration_date = timezone.now() - datetime.timedelta(days=7)
+        inactive_users = CustomUser.objects.filter(is_active=False, date_joined__lt=expiration_date)
+        count = inactive_users.count()
+        inactive_users.delete()
+        self.stdout.write(f'Deleted {count} inactive user accounts.')
\ No newline at end of file
diff --git a/freedoi/accounts/migrations/0003_customuser_date_joined_alter_customuser_is_active.py b/freedoi/accounts/migrations/0003_customuser_date_joined_alter_customuser_is_active.py
new file mode 100644
index 0000000..dd2c0e9
--- /dev/null
+++ b/freedoi/accounts/migrations/0003_customuser_date_joined_alter_customuser_is_active.py
@@ -0,0 +1,24 @@
+# Generated by Django 5.0.6 on 2024-06-23 05:39
+
+import django.utils.timezone
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("accounts", "0002_customuser_maximum_suffixes"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="customuser",
+            name="date_joined",
+            field=models.DateTimeField(default=django.utils.timezone.now),
+        ),
+        migrations.AlterField(
+            model_name="customuser",
+            name="is_active",
+            field=models.BooleanField(default=False),
+        ),
+    ]
diff --git a/freedoi/accounts/models.py b/freedoi/accounts/models.py
index 7e16d7c..5a476da 100644
--- a/freedoi/accounts/models.py
+++ b/freedoi/accounts/models.py
@@ -1,39 +1,50 @@
-from django.contrib.auth.models import AbstractBaseUser, BaseUserManager, PermissionsMixin
+from django.contrib.auth.models import (
+    AbstractBaseUser,
+    BaseUserManager,
+    PermissionsMixin,
+)
 from django.db import models
+from django.utils import timezone
+
 
 class CustomUserManager(BaseUserManager):
     def create_user(self, email, password=None, **extra_fields):
         if not email:
-            raise ValueError('The Email field must be set')
+            raise ValueError("The Email field must be set")
         email = self.normalize_email(email)
+        extra_fields.setdefault("is_active", False)
+        extra_fields.setdefault("date_joined", timezone.now())
         user = self.model(email=email, **extra_fields)
         user.set_password(password)
         user.save(using=self._db)
         return user
 
     def create_superuser(self, email, password=None, **extra_fields):
-        extra_fields.setdefault('is_staff', True)
-        extra_fields.setdefault('is_superuser', True)
+        extra_fields.setdefault("is_staff", True)
+        extra_fields.setdefault("is_superuser", True)
+        extra_fields.setdefault("is_active", True)
 
-        if extra_fields.get('is_staff') is not True:
-            raise ValueError('Superuser must have is_staff=True.')
-        if extra_fields.get('is_superuser') is not True:
-            raise ValueError('Superuser must have is_superuser=True.')
+        if extra_fields.get("is_staff") is not True:
+            raise ValueError("Superuser must have is_staff=True.")
+        if extra_fields.get("is_superuser") is not True:
+            raise ValueError("Superuser must have is_superuser=True.")
 
         return self.create_user(email, password, **extra_fields)
 
+
 class CustomUser(AbstractBaseUser, PermissionsMixin):
     email = models.EmailField(unique=True)
     first_name = models.CharField(max_length=30, blank=True)
     last_name = models.CharField(max_length=30, blank=True)
-    is_active = models.BooleanField(default=True)
+    is_active = models.BooleanField(default=False)
     is_staff = models.BooleanField(default=False)
     maximum_suffixes = models.IntegerField(default=5)
+    date_joined = models.DateTimeField(default=timezone.now)
 
     objects = CustomUserManager()
 
-    USERNAME_FIELD = 'email'
+    USERNAME_FIELD = "email"
     REQUIRED_FIELDS = []
 
     def __str__(self):
-        return self.email
\ No newline at end of file
+        return self.email
diff --git a/freedoi/accounts/urls.py b/freedoi/accounts/urls.py
index 4237404..ce46f75 100644
--- a/freedoi/accounts/urls.py
+++ b/freedoi/accounts/urls.py
@@ -4,11 +4,10 @@ from django.views.generic import TemplateView
 from .views import SendLoginEmailView, LoginView
 
 urlpatterns = [
-    path("send-login-email/", SendLoginEmailView.as_view(), name="send_login_email"),
     path("login/<uidb64>/<token>/", LoginView.as_view(), name="login"),
     path(
         "login/",
-        auth_views.LoginView.as_view(template_name="accounts/login.html"),
+        SendLoginEmailView.as_view(),
         name="login",
     ),
     path("logout/", auth_views.LogoutView.as_view(), name="logout"),
diff --git a/freedoi/accounts/views.py b/freedoi/accounts/views.py
index 1567954..434e4b9 100644
--- a/freedoi/accounts/views.py
+++ b/freedoi/accounts/views.py
@@ -11,25 +11,27 @@ from .forms import EmailForm
 
 User = get_user_model()
 
+
 class SendLoginEmailView(FormView):
-    template_name = 'accounts/send_login_email.html'
+    template_name = "accounts/send_login_email.html"
     form_class = EmailForm
-    success_url = '/accounts/email-sent/'
+    success_url = "/accounts/email-sent/"
 
     def form_valid(self, form):
-        email = form.cleaned_data['email']
+        email = form.cleaned_data["email"]
         user = User.objects.get(email=email)
         token = default_token_generator.make_token(user)
         uid = urlsafe_base64_encode(force_bytes(user.pk))
-        login_url = self.request.build_absolute_uri(f'/accounts/login/{uid}/{token}/')
+        login_url = self.request.build_absolute_uri(f"/accounts/login/{uid}/{token}/")
         send_mail(
-            'Your login link',
-            f'Click here to log in: {login_url}',
-            'from@example.com',
+            "Your login link",
+            f"Click here to log in: {login_url}",
+            None,
             [email],
         )
         return super().form_valid(form)
 
+
 class LoginView(View):
     def get(self, request, uidb64, token):
         try:
@@ -39,8 +41,10 @@ class LoginView(View):
             user = None
 
         if user is not None and default_token_generator.check_token(user, token):
-            user.backend = 'django.contrib.auth.backends.ModelBackend'
+            if not user.is_active:
+                user.is_active = True
+                user.save()
             auth_login(request, user)
-            return redirect('home')
+            return redirect("home")
         else:
-            return HttpResponse('Login link is invalid')
\ No newline at end of file
+            return HttpResponse("Login link is invalid")
diff --git a/freedoi/resolver/migrations/0006_alter_suffix_options_alter_prefix_owner_and_more.py b/freedoi/resolver/migrations/0006_alter_suffix_options_alter_prefix_owner_and_more.py
new file mode 100644
index 0000000..dc42e63
--- /dev/null
+++ b/freedoi/resolver/migrations/0006_alter_suffix_options_alter_prefix_owner_and_more.py
@@ -0,0 +1,34 @@
+# Generated by Django 5.0.6 on 2024-06-23 05:39
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("resolver", "0005_alter_prefix_options_alter_suffix_options"),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name="suffix",
+            options={"ordering": ["prefix", "suffix"]},
+        ),
+        migrations.AlterField(
+            model_name="prefix",
+            name="owner",
+            field=models.ForeignKey(
+                on_delete=django.db.models.deletion.PROTECT, to=settings.AUTH_USER_MODEL
+            ),
+        ),
+        migrations.AlterField(
+            model_name="suffix",
+            name="prefix",
+            field=models.ForeignKey(
+                on_delete=django.db.models.deletion.PROTECT, to="resolver.prefix"
+            ),
+        ),
+    ]
diff --git a/freedoi/resolver/templates/resolver/identifier_confirm_delete.html b/freedoi/resolver/templates/resolver/identifier_confirm_delete.html
index 318fcc5..2407cd4 100644
--- a/freedoi/resolver/templates/resolver/identifier_confirm_delete.html
+++ b/freedoi/resolver/templates/resolver/identifier_confirm_delete.html
@@ -1,9 +1,16 @@
-{% extends "base_generic.html" %} {% block content %}
-<h1>Delete Identifier</h1>
-<p>Are you sure you want to delete "{{ object.identifier }}"?</p>
-<form method="post">
-  {% csrf_token %}
-  <input type="submit" value="Delete" />
-</form>
-<a href="{% url 'identifier_list' %}">Back to list</a>
+{% extends "base_generic.html" %} {% block title %}Delete Identifier
+{% endblock %} {% block content %}
+<div class="container mt-5">
+  <h1>Delete Identifier</h1>
+  <p>Are you sure you want to delete "{{ object.identifier }}"?</p>
+  <form method="post">
+    {% csrf_token %}
+    <button type="submit" class="btn btn-danger">Delete</button>
+  </form>
+  <a
+    class="btn btn-link mt-3"
+    href="{% url 'identifier_list' suffix_pk=object.suffix.pk %}"
+    >Back to identifiers</a
+  >
+</div>
 {% endblock %}
diff --git a/freedoi/resolver/templates/resolver/identifier_detail.html b/freedoi/resolver/templates/resolver/identifier_detail.html
index fcbcc1b..9028ca8 100644
--- a/freedoi/resolver/templates/resolver/identifier_detail.html
+++ b/freedoi/resolver/templates/resolver/identifier_detail.html
@@ -1,11 +1,26 @@
-{% extends "base_generic.html" %} {% block content %}
-<h1>{{ object.identifier }}</h1>
-<p>Suffix: {{ object.suffix }}</p>
-<p>Target URL: {{ object.target_url }}</p>
-<a href="{% url 'identifier_update' object.pk %}">Edit</a>
-<form method="post" action="{% url 'identifier_delete' object.pk %}">
-  {% csrf_token %}
-  <input type="submit" value="Delete" />
-</form>
-<a href="{% url 'identifier_list' %}">Back to list</a>
+{% extends "base_generic.html" %} {% block title %}Identifier Detail
+{% endblock %} {% block content %}
+<div class="container mt-5">
+  <h1>{{ object.identifier }}</h1>
+  <p><strong>Suffix:</strong> {{ object.suffix }}</p>
+  <p><strong>Target URL:</strong> {{ object.target_url }}</p>
+  <a
+    class="btn btn-secondary"
+    href="{% url 'identifier_update' suffix_pk=object.suffix.pk pk=object.pk %}"
+    >Edit</a
+  >
+  <form
+    method="post"
+    action="{% url 'identifier_delete' suffix_pk=object.suffix.pk pk=object.pk %}"
+    style="display: inline"
+  >
+    {% csrf_token %}
+    <input class="btn btn-danger" type="submit" value="Delete" />
+  </form>
+  <a
+    class="btn btn-link"
+    href="{% url 'identifier_list' suffix_pk=object.suffix.pk %}"
+    >Back to identifiers</a
+  >
+</div>
 {% endblock %}
diff --git a/freedoi/resolver/templates/resolver/identifier_form.html b/freedoi/resolver/templates/resolver/identifier_form.html
index e77b5ac..6c3614c 100644
--- a/freedoi/resolver/templates/resolver/identifier_form.html
+++ b/freedoi/resolver/templates/resolver/identifier_form.html
@@ -1,8 +1,16 @@
-{% extends "base_generic.html" %} {% block content %}
-<h1>{% if form.instance.pk %}Edit{% else %}Create{% endif %} Identifier</h1>
-<form method="post">
-  {% csrf_token %} {{ form.as_p }}
-  <input type="submit" value="Save" />
-</form>
-<a href="{% url 'identifier_list' %}">Back to list</a>
+{% extends "base_generic.html" %} {% block title %}
+  {% if form.instance.pk %}Edit{% else %}Create{% endif %} Identifier
+{% endblock %} {% block content %}
+<div class="container mt-5">
+  <h1>{% if form.instance.pk %}Edit{% else %}Create{% endif %} Identifier</h1>
+  <form method="post">
+    {% csrf_token %} {{ form.as_p }}
+    <button type="submit" class="btn btn-primary">Save</button>
+  </form>
+  <a
+    class="btn btn-link mt-3"
+    href="{% url 'identifier_list' suffix_pk=form.instance.suffix.pk %}"
+    >Back to identifiers</a
+  >
+</div>
 {% endblock %}
diff --git a/freedoi/resolver/templates/resolver/identifier_list.html b/freedoi/resolver/templates/resolver/identifier_list.html
index 488a827..ed24cd7 100644
--- a/freedoi/resolver/templates/resolver/identifier_list.html
+++ b/freedoi/resolver/templates/resolver/identifier_list.html
@@ -1,14 +1,24 @@
-{% extends "base_generic.html" %} {% block content %}
-<h1>Identifiers</h1>
-<ul>
-  {% for identifier in object_list %}
-  <li>
-    <a href="{% url 'identifier_detail' identifier.pk %}"
-      >{{ identifier.suffix.prefix.prefix }}.{{ identifier.suffix.suffix }}/
-      {{ identifier.identifier }} ({{ identifier.target_url }})</a
-    >
-  </li>
-  {% endfor %}
-</ul>
-<a href="{% url 'identifier_create' %}">Create new identifier</a>
+{% extends "base_generic.html" %} {% block title %}Identifiers{% endblock %}
+{% block content %}
+<div class="container mt-5">
+  <h1>Identifiers for {{ suffix.name }}</h1>
+  <ul class="list-group">
+    {% for identifier in object_list %}
+    <li class="list-group-item">
+      <a
+        href="{% url 'identifier_detail' suffix_pk=suffix.pk pk=identifier.pk %}"
+        >{{ identifier.identifier }}</a
+      >
+    </li>
+    {% endfor %}
+  </ul>
+  <a
+    class="btn btn-primary mt-3"
+    href="{% url 'identifier_create' suffix_pk=suffix.pk %}"
+    >Create new identifier</a
+  >
+  <a class="btn btn-link mt-3" href="{% url 'suffix_list' %}"
+    >Back to suffixes</a
+  >
+</div>
 {% endblock %}
diff --git a/freedoi/resolver/templates/resolver/suffix_confirm_delete.html b/freedoi/resolver/templates/resolver/suffix_confirm_delete.html
index dcb9ecb..5ecc504 100644
--- a/freedoi/resolver/templates/resolver/suffix_confirm_delete.html
+++ b/freedoi/resolver/templates/resolver/suffix_confirm_delete.html
@@ -1,9 +1,12 @@
-{% extends "base_generic.html" %} {% block content %}
-<h1>Delete Suffix</h1>
-<p>Are you sure you want to delete "{{ object.name }}"?</p>
-<form method="post">
-  {% csrf_token %}
-  <input type="submit" value="Delete" />
-</form>
-<a href="{% url 'suffix_list' %}">Back to list</a>
+{% extends "base_generic.html" %} {% block title %}Delete Suffix{% endblock %}
+{% block content %}
+<div class="container mt-5">
+  <h1>Delete Suffix</h1>
+  <p>Are you sure you want to delete "{{ object.name }}"?</p>
+  <form method="post">
+    {% csrf_token %}
+    <button type="submit" class="btn btn-danger">Delete</button>
+  </form>
+  <a class="btn btn-link mt-3" href="{% url 'suffix_list' %}">Back to list</a>
+</div>
 {% endblock %}
diff --git a/freedoi/resolver/templates/resolver/suffix_detail.html b/freedoi/resolver/templates/resolver/suffix_detail.html
index dc04229..b5829e7 100644
--- a/freedoi/resolver/templates/resolver/suffix_detail.html
+++ b/freedoi/resolver/templates/resolver/suffix_detail.html
@@ -1,23 +1,27 @@
 {% extends "base_generic.html" %} {% block title %}Suffix Detail{% endblock %}
 {% block content %}
-<h1>{{ object.name }}</h1>
-<p><strong>Suffix:</strong> {{ object.suffix }}</p>
-<p><strong>Prefix:</strong> {{ object.prefix }}</p>
-<p><strong>Type:</strong> {{ object.get_type_display }}</p>
-<p><strong>Remote Resolver:</strong> {{ object.remote_resolver }}</p>
-<a class="btn btn-secondary" href="{% url 'suffix_update' object.pk %}">Edit</a>
-<form
-  method="post"
-  action="{% url 'suffix_delete' object.pk %}"
-  style="display: inline"
->
-  {% csrf_token %}
-  <input class="btn btn-danger" type="submit" value="Delete" />
-</form>
-<a
-  class="btn btn-primary"
-  href="{% url 'identifier_list' suffix_pk=object.pk %}"
-  >View Identifiers</a
->
-<a class="btn btn-link" href="{% url 'suffix_list' %}">Back to list</a>
+<div class="container mt-5">
+  <h1>{{ object.name }}</h1>
+  <p><strong>Suffix:</strong> {{ object.suffix }}</p>
+  <p><strong>Prefix:</strong> {{ object.prefix }}</p>
+  <p><strong>Type:</strong> {{ object.get_type_display }}</p>
+  <p><strong>Remote Resolver:</strong> {{ object.remote_resolver }}</p>
+  <a class="btn btn-secondary" href="{% url 'suffix_update' object.pk %}"
+    >Edit</a
+  >
+  <form
+    method="post"
+    action="{% url 'suffix_delete' object.pk %}"
+    style="display: inline"
+  >
+    {% csrf_token %}
+    <input class="btn btn-danger" type="submit" value="Delete" />
+  </form>
+  <a
+    class="btn btn-primary"
+    href="{% url 'identifier_list' suffix_pk=object.pk %}"
+    >View Identifiers</a
+  >
+  <a class="btn btn-link" href="{% url 'suffix_list' %}">Back to list</a>
+</div>
 {% endblock %}
diff --git a/freedoi/resolver/templates/resolver/suffix_form.html b/freedoi/resolver/templates/resolver/suffix_form.html
index dc3534f..2881004 100644
--- a/freedoi/resolver/templates/resolver/suffix_form.html
+++ b/freedoi/resolver/templates/resolver/suffix_form.html
@@ -1,8 +1,12 @@
-{% extends "base_generic.html" %} {% block content %}
-<h1>{% if form.instance.pk %}Edit{% else %}Create{% endif %} Suffix</h1>
-<form method="post">
-  {% csrf_token %} {{ form.as_p }}
-  <input type="submit" value="Save" />
-</form>
-<a href="{% url 'suffix_list' %}">Back to list</a>
+{% extends "base_generic.html" %} {% block title %}
+{% if form.instance.pk %}Edit{% else %}Create{% endif %} Suffix{% endblock %} 
+{% block content %}
+<div class="container mt-5">
+  <h1>{% if form.instance.pk %}Edit{% else %}Create{% endif %} Suffix</h1>
+  <form method="post">
+    {% csrf_token %} {{ form.as_p }}
+    <button type="submit" class="btn btn-primary">Save</button>
+  </form>
+  <a class="btn btn-link mt-3" href="{% url 'suffix_list' %}">Back to list</a>
+</div>
 {% endblock %}
diff --git a/freedoi/resolver/templates/resolver/suffix_list.html b/freedoi/resolver/templates/resolver/suffix_list.html
index 3002a4e..1af95f8 100644
--- a/freedoi/resolver/templates/resolver/suffix_list.html
+++ b/freedoi/resolver/templates/resolver/suffix_list.html
@@ -1,9 +1,16 @@
-{% extends "base_generic.html" %} {% block content %}
-<h1>Suffixes</h1>
-<ul>
-  {% for suffix in object_list %}
-  <li><a href="{% url 'suffix_detail' suffix.pk %}">{{ suffix.prefix.prefix }}.{{ suffix.suffix }} &dash; {{ suffix.name }}</a></li>
-  {% endfor %}
-</ul>
-<a href="{% url 'suffix_create' %}">Create new suffix</a>
+{% extends "base_generic.html" %} {% block title %}Suffixes{% endblock %}
+{% block content %}
+<div class="container mt-5">
+  <h1>Suffixes</h1>
+  <ul class="list-group">
+    {% for suffix in object_list %}
+    <li class="list-group-item">
+      <a href="{% url 'suffix_detail' suffix.pk %}">{{ suffix.name }}</a>
+    </li>
+    {% endfor %}
+  </ul>
+  <a class="btn btn-primary mt-3" href="{% url 'suffix_create' %}"
+    >Create new suffix</a
+  >
+</div>
 {% endblock %}