diff --git a/docs/options.rst b/docs/options.rst
index 2a33fb7..bd4009e 100644
--- a/docs/options.rst
+++ b/docs/options.rst
@@ -35,4 +35,16 @@ You can also define the number of seconds a user must wait before trying again.
 
 .. code-block:: python
 
-    c.Authenticator.secs_before_next_try = 1200
+    c.Authenticator.seconds_before_next_try = 1200
+
+
+Open SignUp
+-----------
+
+By default all users that make sign up on Native Authenticator need an admin approval so 
+they can actually log in the system. You can change this behavior by adding an option of 
+open signup, where all users that do sign up can already log in the system. To do so, just add this line to the config file:
+
+.. code-block:: python
+
+    c.Authenticator.open_signup = True
diff --git a/nativeauthenticator/handlers.py b/nativeauthenticator/handlers.py
index eebdd83..c5ed471 100644
--- a/nativeauthenticator/handlers.py
+++ b/nativeauthenticator/handlers.py
@@ -31,22 +31,37 @@ class SignUpHandler(LocalBase):
         html = self.render_template('signup.html')
         self.finish(html)
 
+    def get_result_message(self, message_type):
+        messages = {
+            'normal': 'Your information have been sent to the admin',
+            'error': ('Something went wrong. Be sure your password has at '
+                      f'least {self.authenticator.minimum_password_length} '
+                      'characters and is not too common.'),
+            'success':  ('The signup was successful. You can now go to '
+                         'home page and log in the system'),
+        }
+        return messages[message_type]
+
     async def post(self):
         username = self.get_body_argument('username', strip=False)
         password = self.get_body_argument('password', strip=False)
         user = self.authenticator.get_or_create_user(username, password)
 
-        result_message = 'Your information have been sent to the admin'
+        alert = 'alert-info'
+        result_message = self.get_result_message('normal')
+
+        if self.authenticator.open_signup:
+            alert = 'alert-success'
+            result_message = self.get_result_message('success')
+
         if not user:
-            result_message = f"""Something went wrong. Be sure your password
-                                has at least
-                                {self.authenticator.minimum_password_length}
-                                characters and is not too common."""
+            alert = 'alert-danger'
+            result_message = self.get_result_message('error')
 
         html = self.render_template(
             'signup.html',
-            result=bool(user),
             result_message=result_message,
+            alert=alert
         )
         self.finish(html)
 
diff --git a/nativeauthenticator/nativeauthenticator.py b/nativeauthenticator/nativeauthenticator.py
index d454a33..9d6ce77 100644
--- a/nativeauthenticator/nativeauthenticator.py
+++ b/nativeauthenticator/nativeauthenticator.py
@@ -18,26 +18,32 @@ class NativeAuthenticator(Authenticator):
     check_common_password = Bool(
         config=True,
         default=False,
-        help="""Creates a verification of password strength
-        when a new user makes signup"""
+        help=("Creates a verification of password strength "
+              "when a new user makes signup")
     )
     minimum_password_length = Integer(
         config=True,
         default=1,
-        help="""Check if the length of the password is at least this size on
-        signup"""
+        help=("Check if the length of the password is at least this size on "
+              "signup")
     )
     allowed_failed_logins = Integer(
         config=True,
         default=0,
-        help="""Configures the number of failed attempts a user can have
-                before being blocked."""
+        help=("Configures the number of failed attempts a user can have "
+              "before being blocked.")
     )
     seconds_before_next_try = Integer(
         config=True,
         default=600,
-        help="""Configures the number of seconds a user has to wait
-                after being blocked. Default is 600."""
+        help=("Configures the number of seconds a user has to wait "
+              "after being blocked. Default is 600.")
+    )
+    open_signup = Bool(
+        config=True,
+        default=False,
+        help=("Allows every user that made sign up to automatically log in "
+              "the system without needing admin authorization")
     )
 
     def __init__(self, add_new_table=True, *args, **kwargs):
@@ -132,7 +138,7 @@ class NativeAuthenticator(Authenticator):
 
         encoded_pw = bcrypt.hashpw(pw.encode(), bcrypt.gensalt())
         infos = {'username': username, 'password': encoded_pw}
-        if username in self.admin_users:
+        if username in self.admin_users or self.open_signup:
             infos.update({'is_authorized': True})
 
         user_info = UserInfo(**infos)
diff --git a/nativeauthenticator/templates/signup.html b/nativeauthenticator/templates/signup.html
index c92f3cd..00f8d7e 100644
--- a/nativeauthenticator/templates/signup.html
+++ b/nativeauthenticator/templates/signup.html
@@ -59,9 +59,7 @@ document.addEventListener('DOMContentLoaded', function() {
         </div>
       </div>
     </form>
-    {% if result %}
-      <div class="alert alert-info" role="alert">{{result_message}}</div>
-    {% endif %}
+    <div class="alert {{alert}}" role="alert">{{result_message}}</div>
   </div>
 
 

Add option for Open SignUp
Make an option that all signups are already authorized by default
diff --git a/nativeauthenticator/tests/test_authenticator.py b/nativeauthenticator/tests/test_authenticator.py
index f3b34e0..383427a 100644
--- a/nativeauthenticator/tests/test_authenticator.py
+++ b/nativeauthenticator/tests/test_authenticator.py
@@ -24,12 +24,25 @@ pytestmark = pytest.mark.asyncio
 pytestmark = pytestmark(pytest.mark.usefixtures("tmpcwd"))
 
 
-async def test_create_user(tmpcwd, app):
-    '''Test if method get_or_create_user creates a new user'''
+@pytest.mark.parametrize("is_admin,open_signup,expected_authorization", [
+    (False, False, False),
+    (True, False, True),
+    (False, True, True),
+])
+async def test_create_user(is_admin, open_signup, expected_authorization,
+                           tmpcwd, app):
+    '''Test method get_or_create_user for new user and authorization '''
     auth = NativeAuthenticator(db=app.db)
-    auth.get_or_create_user('John Snow', 'password')
-    user_info = UserInfo.find(app.db, 'John Snow')
-    assert user_info.username == 'John Snow'
+
+    if is_admin:
+        auth.admin_users = ({'johnsnow'})
+    if open_signup:
+        auth.open_signup = True
+
+    auth.get_or_create_user('johnsnow', 'password')
+    user = UserInfo.find(app.db, 'johnsnow')
+    assert user.username == 'johnsnow'
+    assert user.is_authorized == expected_authorization
 
 
 @pytest.mark.parametrize("password,min_len,expected", [

pip install -e .
parse_log_pytest
requirements.txt
pytest pytest-asyncio
apt-get update apt-get install -y gcc
3.7
dev-requirements.txt
pytest --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning
alembic==1.12.1
async-generator==1.10
attrs==24.2.0
backcall==0.2.0
bcrypt==4.2.1
beautifulsoup4==4.13.3
bleach==6.0.0
certifi @ file:///croot/certifi_1671487769961/work/certifi
certipy==0.2.2
cffi==1.15.1
charset-normalizer==3.4.1
codecov==2.1.13
coverage==7.2.7
cryptography==44.0.2
debugpy==1.7.0
decorator==5.1.1
defusedxml==0.7.1
entrypoints==0.4
exceptiongroup==1.2.2
fastjsonschema==2.21.1
flake8==5.0.4
greenlet==3.1.1
idna==3.10
importlib-metadata==4.2.0
importlib-resources==5.12.0
iniconfig==2.0.0
ipykernel==6.16.2
ipython==7.34.0
ipython-genutils==0.2.0
jedi==0.19.2
Jinja2==3.1.6
jsonschema==4.17.3
jupyter-telemetry==0.1.0
jupyter_client==7.4.9
jupyter_core==4.12.0
jupyterhub==4.1.6
-e git+https://github.com/jupyterhub/nativeauthenticator.git@753c53a6d5f5cfcd0e94cff1376759e621f70436#egg=jupyterhub_nativeauthenticator
jupyterlab-pygments==0.2.2
Mako==1.2.4
MarkupSafe==2.1.5
matplotlib-inline==0.1.6
mccabe==0.7.0
mistune==3.0.2
nbclient==0.7.4
nbconvert==7.6.0
nbformat==5.8.0
nest-asyncio==1.6.0
notebook==5.7.2
oauthlib==3.2.2
packaging==24.0
pamela==1.2.0
pandocfilters==1.5.1
parso==0.8.4
pexpect==4.9.0
pickleshare==0.7.5
pkgutil_resolve_name==1.3.10
pluggy==1.2.0
prometheus-client==0.17.1
prompt_toolkit==3.0.48
psutil==7.0.0
ptyprocess==0.7.0
pycodestyle==2.9.1
pycparser==2.21
pyflakes==2.5.0
Pygments==2.17.2
pyrsistent==0.19.3
pytest==7.4.4
pytest-asyncio==0.21.2
python-dateutil==2.9.0.post0
python-json-logger==3.0.1
pyzmq==26.2.1
requests==2.31.0
ruamel.yaml==0.18.10
ruamel.yaml.clib==0.2.8
Send2Trash==1.8.3
six==1.17.0
soupsieve==2.4.1
SQLAlchemy==2.0.40
terminado==0.17.1
tinycss2==1.2.1
tomli==2.0.1
tornado==6.2
traitlets==5.9.0
typing_extensions==4.7.1
urllib3==2.0.7
wcwidth==0.2.13
webencodings==0.5.1
zipp==3.15.0

name: nativeauthenticator
channels:
  - defaults
  - https://repo.anaconda.com/pkgs/main
  - https://repo.anaconda.com/pkgs/r
  - conda-forge
dependencies:
  - _libgcc_mutex=0.1=main
  - _openmp_mutex=5.1=1_gnu
  - ca-certificates=2025.2.25=h06a4308_0
  - certifi=2022.12.7=py37h06a4308_0
  - ld_impl_linux-64=2.40=h12ee557_0
  - libffi=3.4.4=h6a678d5_1
  - libgcc-ng=11.2.0=h1234567_1
  - libgomp=11.2.0=h1234567_1
  - libstdcxx-ng=11.2.0=h1234567_1
  - ncurses=6.4=h6a678d5_0
  - openssl=1.1.1w=h7f8727e_0
  - pip=22.3.1=py37h06a4308_0
  - python=3.7.16=h7a1cb2a_0
  - readline=8.2=h5eee18b_0
  - setuptools=65.6.3=py37h06a4308_0
  - sqlite=3.45.3=h5eee18b_0
  - tk=8.6.14=h39e8969_0
  - wheel=0.38.4=py37h06a4308_0
  - xz=5.6.4=h5eee18b_1
  - zlib=1.2.13=h5eee18b_1
  - pip:
      - alembic==1.12.1
      - async-generator==1.10
      - attrs==24.2.0
      - backcall==0.2.0
      - bcrypt==4.2.1
      - beautifulsoup4==4.13.3
      - bleach==6.0.0
      - certipy==0.2.2
      - cffi==1.15.1
      - charset-normalizer==3.4.1
      - codecov==2.1.13
      - coverage==7.2.7
      - cryptography==44.0.2
      - debugpy==1.7.0
      - decorator==5.1.1
      - defusedxml==0.7.1
      - entrypoints==0.4
      - exceptiongroup==1.2.2
      - fastjsonschema==2.21.1
      - flake8==5.0.4
      - greenlet==3.1.1
      - idna==3.10
      - importlib-metadata==4.2.0
      - importlib-resources==5.12.0
      - iniconfig==2.0.0
      - ipykernel==6.16.2
      - ipython==7.34.0
      - ipython-genutils==0.2.0
      - jedi==0.19.2
      - jinja2==3.1.6
      - jsonschema==4.17.3
      - jupyter-client==7.4.9
      - jupyter-core==4.12.0
      - jupyter-telemetry==0.1.0
      - jupyterhub==4.1.6
      - jupyterlab-pygments==0.2.2
      - mako==1.2.4
      - markupsafe==2.1.5
      - matplotlib-inline==0.1.6
      - mccabe==0.7.0
      - mistune==3.0.2
      - nbclient==0.7.4
      - nbconvert==7.6.0
      - nbformat==5.8.0
      - nest-asyncio==1.6.0
      - notebook==5.7.2
      - oauthlib==3.2.2
      - packaging==24.0
      - pamela==1.2.0
      - pandocfilters==1.5.1
      - parso==0.8.4
      - pexpect==4.9.0
      - pickleshare==0.7.5
      - pkgutil-resolve-name==1.3.10
      - pluggy==1.2.0
      - prometheus-client==0.17.1
      - prompt-toolkit==3.0.48
      - psutil==7.0.0
      - ptyprocess==0.7.0
      - pycodestyle==2.9.1
      - pycparser==2.21
      - pyflakes==2.5.0
      - pygments==2.17.2
      - pyrsistent==0.19.3
      - pytest==7.4.4
      - pytest-asyncio==0.21.2
      - python-dateutil==2.9.0.post0
      - python-json-logger==3.0.1
      - pyzmq==26.2.1
      - requests==2.31.0
      - ruamel-yaml==0.18.10
      - ruamel-yaml-clib==0.2.8
      - send2trash==1.8.3
      - six==1.17.0
      - soupsieve==2.4.1
      - sqlalchemy==2.0.40
      - terminado==0.17.1
      - tinycss2==1.2.1
      - tomli==2.0.1
      - tornado==6.2
      - traitlets==5.9.0
      - typing-extensions==4.7.1
      - urllib3==2.0.7
      - wcwidth==0.2.13
      - webencodings==0.5.1
      - zipp==3.15.0
prefix: /opt/conda/envs/nativeauthenticator

nativeauthenticator/tests/test_authenticator.py::test_create_user[False-True-True]
nativeauthenticator/tests/test_authenticator.py::test_create_user[False-False-False] nativeauthenticator/tests/test_authenticator.py::test_create_user[True-False-True] nativeauthenticator/tests/test_authenticator.py::test_create_user_with_strong_passwords[qwerty-1-False] nativeauthenticator/tests/test_authenticator.py::test_create_user_with_strong_passwords[agameofthrones-1-True] nativeauthenticator/tests/test_authenticator.py::test_create_user_with_strong_passwords[agameofthrones-15-False] nativeauthenticator/tests/test_authenticator.py::test_create_user_with_strong_passwords[averyveryverylongpassword-15-True] nativeauthenticator/tests/test_authenticator.py::test_authentication[name-123-False-False] nativeauthenticator/tests/test_authenticator.py::test_authentication[John nativeauthenticator/tests/test_authenticator.py::test_authentication[Snow-password-True-False] nativeauthenticator/tests/test_authenticator.py::test_handlers nativeauthenticator/tests/test_authenticator.py::test_add_new_attempt_of_login nativeauthenticator/tests/test_authenticator.py::test_authentication_login_count nativeauthenticator/tests/test_authenticator.py::test_authentication_with_exceed_atempts_of_login
nativeauthenticator/nativeauthenticator.py nativeauthenticator/handlers.py docs/options.rst nativeauthenticator/templates/signup.html
nativeauthenticator/nativeauthenticator.py nativeauthenticator/handlers.py docs/options.rst nativeauthenticator/templates/signup.html