diff --git a/allauth_oauth/signals.py b/allauth_oauth/signals.py
index d7f1cf6..d7b688f 100644
--- a/allauth_oauth/signals.py
+++ b/allauth_oauth/signals.py
@@ -2,6 +2,7 @@
 # Copyright (C) 2022  Amicale des élèves de l'ENS Paris-Saclay
 # SPDX-License-Identifier: GPL-3.0-or-later
 
+from allauth.account.models import EmailAddress
 from allauth.socialaccount.signals import pre_social_login
 from django.dispatch import receiver
 
@@ -19,6 +20,7 @@ def sync_user_fields(sender, request, sociallogin, **kwargs):
     if email and user.email != email:
         user.email = email
         changed = True
+        EmailAddress.objects.filter(user=user).update(email=email)
 
     username = data.get("username")
     if username and user.username != username:
diff --git a/allauth_oauth/views.py b/allauth_oauth/views.py
index 7a568a5..88a378f 100644
--- a/allauth_oauth/views.py
+++ b/allauth_oauth/views.py
@@ -4,6 +4,7 @@
 
 import requests
 from allauth.socialaccount import app_settings
+from django.core.exceptions import ImproperlyConfigured
 from allauth.socialaccount.providers.oauth2.views import (
     OAuth2Adapter,
     OAuth2CallbackView,
@@ -31,7 +32,12 @@ class OAuthAdapter(OAuth2Adapter):
 
     @property
     def domain(self):
-        return self.settings.get("DOMAIN", "")
+        domain = self.settings.get("DOMAIN", "")
+        if not domain:
+            raise ImproperlyConfigured(
+                "OAUTH_SERVER_URL is not configured. Set it in your .env file."
+            )
+        return domain
 
     @property
     def access_token_url(self):
@@ -46,5 +52,7 @@ class OAuthAdapter(OAuth2Adapter):
         return f"https://{self.domain}/api/me/"
 
 
+OAuthProvider.oauth2_adapter_class = OAuthAdapter
+
 oauth2_login = OAuth2LoginView.adapter_view(OAuthAdapter)
 oauth2_callback = OAuth2CallbackView.adapter_view(OAuthAdapter)
diff --git a/photo21/settings.py b/photo21/settings.py
index 422f2c7..5356936 100644
--- a/photo21/settings.py
+++ b/photo21/settings.py
@@ -118,6 +118,7 @@ TEMPLATES = [
                 "django.template.context_processors.request",
                 "django.contrib.auth.context_processors.auth",
                 "django.contrib.messages.context_processors.messages",
+                "photo21.views.oauth_context",
             ],
         },
     },
@@ -282,6 +283,9 @@ ACCOUNT_FORMS = {"signup": "photo21.forms.CustomSignupForm"}
 
 if OAUTH_ENABLED:
     SOCIALACCOUNT_ONLY = OAUTH_ONLY
+    if OAUTH_ONLY:
+        ACCOUNT_EMAIL_VERIFICATION = 'none'
+    SOCIALACCOUNT_LOGIN_ON_GET = True
     SOCIALACCOUNT_PROVIDERS = {
         "oauth": {
             "SCOPE": OAUTH_SCOPE,
diff --git a/photo21/templates/account/login.html b/photo21/templates/account/login.html
index a2bc666..b1c48b3 100644
--- a/photo21/templates/account/login.html
+++ b/photo21/templates/account/login.html
@@ -15,10 +15,12 @@ SPDX-License-Identifier: GPL-3.0-or-later
         <div class="d-grid col-6 mx-auto">
             {% include "socialaccount/snippets/provider_list.html" with process="login" %}
         </div>
+        {% if not SOCIALACCOUNT_ONLY %}
         <hr/>
         <p>{% blocktrans trimmed with site.name as site_name %}Please sign in with one
             of your existing third party accounts. Or, <a href="{{ signup_url }}">sign up</a>
             for a {{ site_name }} account and sign in below:{% endblocktrans %}</p>
+        {% endif %}
 
         {% include "socialaccount/snippets/login_extra.html" %}
 
@@ -27,6 +29,7 @@ SPDX-License-Identifier: GPL-3.0-or-later
         <a href="{{ signup_url }}">sign up</a> first.{% endblocktrans %}</p>
         {% endif %}
 
+        {% if not SOCIALACCOUNT_ONLY %}
         <form method="post" action="{% url 'account_login' %}">{% csrf_token %}
             {{ form|crispy }}
             {% if redirect_field_value %}
@@ -36,7 +39,8 @@ SPDX-License-Identifier: GPL-3.0-or-later
                 <button type="submit" class="btn btn-primary btn-lg my-2">{% trans "Sign In" %}</button>
             </div>
         </form>
-        <a class="link-secondary" href="{% url 'account_reset_password' %}">{% trans "Forgot Password?" %}</a>
+        {% url 'account_reset_password' as reset_url %}{% if reset_url %}<a class="link-secondary" href="{{ reset_url }}">{% trans "Forgot Password?" %}</a>{% endif %}
+        {% endif %}
     </div>
 </div>
 <!-- <p class="small text-center mt-1">{% trans "If any problem, please contact the server owners at" %} <code>photos[at]crans.org</code>.</p> -->
diff --git a/photo21/templates/base.html b/photo21/templates/base.html
index ccd17c2..ce771a1 100644
--- a/photo21/templates/base.html
+++ b/photo21/templates/base.html
@@ -100,15 +100,16 @@ SPDX-License-Identifier: GPL-3.0-or-later
                                 {% trans "Log in" %}
                             </a>
                         </li>
-                        <li class="nav-item">
-                            <a class="nav-link" href="{% url 'account_signup' %}">
+                        {% url 'account_signup' as signup_url %}
+                        {% if signup_url %}<li class="nav-item">
+                            <a class="nav-link" href="{{ signup_url }}">
                                 <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-person-plus" viewBox="0 0 16 16">
                                     <path d="M6 8a3 3 0 1 0 0-6 3 3 0 0 0 0 6zm2-3a2 2 0 1 1-4 0 2 2 0 0 1 4 0zm4 8c0 1-1 1-1 1H1s-1 0-1-1 1-4 6-4 6 3 6 4zm-1-.004c-.001-.246-.154-.986-.832-1.664C9.516 10.68 8.289 10 6 10c-2.29 0-3.516.68-4.168 1.332-.678.678-.83 1.418-.832 1.664h10z"/>
                                     <path fill-rule="evenodd" d="M13.5 5a.5.5 0 0 1 .5.5V7h1.5a.5.5 0 0 1 0 1H14v1.5a.5.5 0 0 1-1 0V8h-1.5a.5.5 0 0 1 0-1H13V5.5a.5.5 0 0 1 .5-.5z"/>
                                 </svg>
                                 {% trans "Sign up" %}
                             </a>
-                        </li>
+                        </li>{% endif %}
                     {% endif %}
                 </ul>
             </div>
diff --git a/photo21/templates/socialaccount/snippets/provider_list.html b/photo21/templates/socialaccount/snippets/provider_list.html
index 71a8ec0..dc6aad7 100644
--- a/photo21/templates/socialaccount/snippets/provider_list.html
+++ b/photo21/templates/socialaccount/snippets/provider_list.html
@@ -17,5 +17,5 @@ SPDX-License-Identifier: GPL-3.0-or-later
 {% endfor %}
 {% endif %}
 <a title="{{provider.name}}" class="btn btn-success"
-    href="{% provider_login_url provider.id process=process scope=scope auth_params=auth_params %}">{% trans "Sign in with" %} {{provider.name}}</a>
+    href="{% provider_login_url provider.id process=process scope=scope auth_params=auth_params %}">{{ OAUTH_BUTTON_TEXT|default:provider.name }}</a>
 {% endfor %}
diff --git a/photo21/views.py b/photo21/views.py
index 65f0b11..075f249 100644
--- a/photo21/views.py
+++ b/photo21/views.py
@@ -69,3 +69,10 @@ class IndexView(LoginRequiredMixin, ListView):
         context["superusers"] = superusers
 
         return context
+
+
+def oauth_context(request):
+    return {
+        "OAUTH_BUTTON_TEXT": getattr(settings, "OAUTH_BUTTON_TEXT", ""),
+        "OAUTH_BUTTON_IMAGE": getattr(settings, "OAUTH_BUTTON_IMAGE", ""),
+    }