diff --git a/musician/models.py b/musician/models.py
index aa3ebd4..a0c058f 100644
--- a/musician/models.py
+++ b/musician/models.py
@@ -5,6 +5,8 @@ from django.utils.dateparse import parse_datetime
 from django.utils.html import format_html
 from django.utils.translation import gettext_lazy as _
 
+from . import settings as musician_settings
+
 
 logger = logging.getLogger(__name__)
 
@@ -249,9 +251,8 @@ class MailinglistService(OrchestraModel):
         return "{}@{}".format(self.data['address_name'], self.data['address_domain']['name'])
 
     @property
-    def configure(self):
-        # TODO(@slamora): build mailtran absolute URL
-        return format_html('<a href="#TODO">Mailtrain</a>')
+    def manager_url(self):
+        return musician_settings.URL_MAILTRAIN
 
 
 class SaasService(OrchestraModel):
@@ -266,6 +267,17 @@ class SaasService(OrchestraModel):
     }
 
 
+    @property
+    def manager_url(self):
+        URLS = {
+            'gitlab': musician_settings.URL_SAAS_GITLAB,
+            'owncloud': musician_settings.URL_SAAS_OWNCLOUD,
+            'wordpress': musician_settings.URL_SAAS_WORDPRESS,
+        }
+
+        return URLS.get(self.service, '#none')
+
+
 class WebSite(OrchestraModel):
     api_name = 'website'
     param_defaults = {
diff --git a/musician/settings.py b/musician/settings.py
index 5581061..7dab46f 100644
--- a/musician/settings.py
+++ b/musician/settings.py
@@ -1,14 +1,41 @@
-# allowed resources limit hardcoded because cannot be retrieved from the API.
-ALLOWED_RESOURCES = {
-    'INDIVIDUAL':
-    {
-        # 'disk': 1024,
-        # 'traffic': 2048,
-        'mailbox': 2,
+from django.conf import settings
+
+
+def getsetting(name):
+    value = getattr(settings, name, None)
+    return value or DEFAULTS.get(name)
+
+
+DEFAULTS = {
+    # allowed resources limit hardcoded because cannot be retrieved from the API.
+    "ALLOWED_RESOURCES": {
+        'INDIVIDUAL':
+        {
+            # 'disk': 1024,
+            # 'traffic': 2048,
+            'mailbox': 2,
+        },
+        'ASSOCIATION': {
+            # 'disk': 5 * 1024,
+            # 'traffic': 20 * 1024,
+            'mailbox': 10,
+        }
     },
-    'ASSOCIATION': {
-        # 'disk': 5 * 1024,
-        # 'traffic': 20 * 1024,
-        'mailbox': 10,
-    }
+    "URL_DB_PHPMYADMIN": "https://www.phpmyadmin.net/",
+    "URL_MAILTRAIN": "https://mailtrain.org/",
+    "URL_SAAS_GITLAB": "https://gitlab.org/",
+    "URL_SAAS_OWNCLOUD": "https://owncloud.org/",
+    "URL_SAAS_WORDPRESS": "https://wordpress.org/",
 }
+
+ALLOWED_RESOURCES = getsetting("ALLOWED_RESOURCES")
+
+URL_DB_PHPMYADMIN = getsetting("URL_DB_PHPMYADMIN")
+
+URL_MAILTRAIN = getsetting("URL_MAILTRAIN")
+
+URL_SAAS_GITLAB = getsetting("URL_SAAS_GITLAB")
+
+URL_SAAS_OWNCLOUD = getsetting("URL_SAAS_OWNCLOUD")
+
+URL_SAAS_WORDPRESS = getsetting("URL_SAAS_WORDPRESS")
diff --git a/musician/templates/musician/dashboard.html b/musician/templates/musician/dashboard.html
index 7988f31..69c9239 100644
--- a/musician/templates/musician/dashboard.html
+++ b/musician/templates/musician/dashboard.html
@@ -66,9 +66,9 @@
           <p class="card-text"><i class="fas fa-envelope fa-3x"></i></p>
           <p class="card-text text-dark">
             {{ domain.mails|length }} {% trans "mail addresses created" %}
-            {% if domain.address_left.alert_level %}
+            {% if domain.addresses_left.alert_level %}
             <br/>
-            <span class="text-{{ domain.address_left.alert_level }}">{{ domain.address_left.count }} mail address left</span>
+            <span class="text-{{ domain.addresses_left.alert_level }}">{{ domain.addresses_left.count }} mail address left</span>
             {% endif %}
           </p>
           <a class="stretched-link" href="{% url 'musician:mails' %}?domain={{ domain.id }}"></a>
diff --git a/musician/templates/musician/mailinglists.html b/musician/templates/musician/mailinglists.html
index 22a1b87..6ff509e 100644
--- a/musician/templates/musician/mailinglists.html
+++ b/musician/templates/musician/mailinglists.html
@@ -37,7 +37,7 @@
       {% endif %}
       <td>{{ resource.address_name}}</td>
       <td>{{ resource.admin_email }}</td>
-      <td><a href="#TODO-{{ resource.manager_url }}" target="_blank" rel="noopener noreferrer">Mailtrain</a></td>
+      <td><a href="{{ resource.manager_url }}" target="_blank" rel="noopener noreferrer">Mailtrain <i class="fas fa-external-link-alt"></i></a></td>
     </tr>
     {% endfor %}
   </tbody>
diff --git a/musician/templates/musician/saas.html b/musician/templates/musician/saas.html
index cff1e83..4da034f 100644
--- a/musician/templates/musician/saas.html
+++ b/musician/templates/musician/saas.html
@@ -34,7 +34,7 @@
         </div>
         <div class="col-md-5 text-right">
           <div class="service-manager-link">
-            <a class="btn btn-primary" href="#open-service">{% trans "Open service admin panel" %} <i class="fas fa-external-link-alt"></i></a>
+            <a class="btn btn-primary" href="{{ saas.manager_url }}" target="_blank" rel="noopener noreferrer">{% trans "Open service admin panel" %} <i class="fas fa-external-link-alt"></i></a>
           </div>
         </div>
       </div>
diff --git a/userpanel/settings.py b/userpanel/settings.py
index 4d45a17..d14b228 100644
--- a/userpanel/settings.py
+++ b/userpanel/settings.py
@@ -147,3 +147,15 @@ STATIC_ROOT = config('STATIC_ROOT')
 # Backend API configuration
 
 API_BASE_URL = config('API_BASE_URL')
+
+
+# External services URLs
+URL_DB_PHPMYADMIN = config('URL_DB_PHPMYADMIN', None)
+
+URL_MAILTRAIN = config('URL_MAILTRAIN', None)
+
+URL_SAAS_GITLAB = config('URL_SAAS_GITLAB', None)
+
+URL_SAAS_OWNCLOUD = config('URL_SAAS_OWNCLOUD', None)
+
+URL_SAAS_WORDPRESS = config('URL_SAAS_WORDPRESS', None)