diff --git a/backend/accounts/utils.py b/backend/accounts/utils.py
index d5e083c..609046c 100644
--- a/backend/accounts/utils.py
+++ b/backend/accounts/utils.py
@@ -9,7 +9,8 @@ from django.core.mail import EmailMultiAlternatives
 from django.utils.html import format_html
 from backend.core.utils import generate_first_page_image
 from email.mime.image import MIMEImage
-
+from django.conf import settings
+site_domain = settings.SITE_DOMAIN
 
 def send_confirmation_email(email):
     confirmation, created = EmailConfirmation.objects.get_or_create(email=email)
@@ -19,7 +20,7 @@ def send_confirmation_email(email):
         confirmation.created_at = now()
         confirmation.save()
 
-    confirmation_link = f"http://127.0.0.1:8000{reverse('confirm_email', args=[confirmation.uuid])}"
+    confirmation_link = f"{site_domain}{reverse('confirm_email', args=[confirmation.uuid])}"
 
     send_mail(
         subject="Confirm your e-mail address",
@@ -32,7 +33,7 @@ def send_payment_email(email):
     organization = Organization.objects.get(email=email)
     document = Document.objects.get(organization=organization)
 
-    payment_link = f"http://127.0.0.1:8000{reverse('core:payment_page')}?email={email}"
+    payment_link = f"{site_domain}{reverse('core:payment_page')}?email={email}"
 
     send_mail(
         subject="Complete your payment",
diff --git a/backend/core/models.py b/backend/core/models.py
index 6dc5587..6c42916 100644
--- a/backend/core/models.py
+++ b/backend/core/models.py
@@ -44,8 +44,8 @@ class CreatedBy(models.Model):
 
 
 class Organization(models.Model):
-    name = models.CharField(max_length=255, help_text="What is the name of your organization?")
-    email = models.EmailField(help_text="What is your email?")
+    name = models.CharField(max_length=255, unique=True, help_text="What is the name of your organization?")
+    email = models.EmailField(unique=True, help_text="What is your email?")
     employee_headcount = models.CharField(max_length=20, help_text="What is your organization's current employee headcount?")
     annual_revenue = models.CharField(max_length=20, help_text="What is your organization's annual revenue range?")
     critical_applications = models.CharField(max_length=20, help_text="How many critical business applications do your employees use daily?")
diff --git a/backend/core/views.py b/backend/core/views.py
index 3f6350e..94cf41e 100644
--- a/backend/core/views.py
+++ b/backend/core/views.py
@@ -8,6 +8,8 @@ from backend.accounts.utils import send_confirmation_email, send_document_email
 from django.contrib.admin.views.decorators import staff_member_required
 from django.template import Template, Context
 from .utils import generate_pdf
+from django.conf import settings
+site_domain = settings.SITE_DOMAIN
 
 
 
@@ -110,7 +112,7 @@ def payment_page(request):
     document = get_object_or_404(Document, organization=organization)
     
     if request.method == "POST":
-        pdf_url = f"http://127.0.0.1:8000/pdf/{document.id}"
+        pdf_url = f"{site_domain}/document/{document.id}/"
         send_document_email(email, pdf_url, document)  
         return redirect(pdf_url)
     
diff --git a/backend/settings.py b/backend/settings.py
index fee0daf..1b5c616 100644
--- a/backend/settings.py
+++ b/backend/settings.py
@@ -37,6 +37,7 @@ DEBUG = config('DEBUG', default=False, cast=bool)
 
 ALLOWED_HOSTS = config('ALLOWED_HOSTS', default=[], cast=Csv())
 
+SITE_DOMAIN = "http://64.226.105.114"
 
 # Application definition