diff --git a/backend/app.py b/backend/app.py
index 89508a7..86f94bf 100644
--- a/backend/app.py
+++ b/backend/app.py
@@ -45,6 +45,9 @@ assert elastic_url
 jwt_secret = os.getenv("SECRET")
 assert jwt_secret
 
+app_domain = os.getenv("APP_DOMAIN")
+assert app_domain
+
 
 
 class MeasureTime:
@@ -371,7 +374,7 @@ def create_app():
 
             Please click on the following link to verify your e-mail:
 
-            <a href="http://127.0.0.1:5000/verify?id={user.password_hash}">Click here!</a>
+            <a href="{app_domain}/verify?id={user.password_hash}">Click here!</a>
 
             """
 
diff --git a/backend/lib/models.py b/backend/lib/models.py
index 3fef1ef..5c329b9 100644
--- a/backend/lib/models.py
+++ b/backend/lib/models.py
@@ -4,10 +4,7 @@ from elasticsearch_dsl import Document, InnerDoc, Nested, Date, Integer, Keyword
 class User(Document):
     creation_date = Date()
     email = Keyword()
-    #password_hash = Text(index=False)
     password_hash = Keyword()
-    #password_hash = Text(index=True)
-
     role = Keyword()
 
     #salt = Text(index=False)
@@ -39,7 +36,6 @@ class Chatbot(Document):
     description = Text()
     systemPrompt = Text(index=False)
 
-    #slug = Keyword()
     files = Nested()
     text = Text()
     links = Nested()
diff --git a/deployment/sample.env b/deployment/sample.env
index e28cece..7050398 100644
--- a/deployment/sample.env
+++ b/deployment/sample.env
@@ -1,5 +1,6 @@
 
 APP_PREFIX=creative_bots
+APP_DOMAIN=https://chatbot.mysite.net
 
 # DEFAULT_USERS is list of lists, each nested list respectively contains email, password and role
 DEFAULT_USERS=[["user@mail.net", "12345", "user"], ["admin@mail.net", "12345", "admin"]]