diff --git a/bemade_mailcow_integration/__manifest__.py b/bemade_mailcow_integration/__manifest__.py
index 91e81e3..14c39bb 100644
--- a/bemade_mailcow_integration/__manifest__.py
+++ b/bemade_mailcow_integration/__manifest__.py
@@ -40,7 +40,6 @@
             "bemade_mailcow_integration/static/src/xml/mailcow_templates.xml",
         ],
     },
-    'demo': [],
     'installable': True,
     'application': False,
     'auto_install': False
diff --git a/bemade_mailcow_integration/models/mail_alias.py b/bemade_mailcow_integration/models/mail_alias.py
index 0bec8ce..66a1a98 100644
--- a/bemade_mailcow_integration/models/mail_alias.py
+++ b/bemade_mailcow_integration/models/mail_alias.py
@@ -16,15 +16,14 @@ class MailAlias(models.Model):
         alias_domain = alias_domain[0]
         catchall_alias = catchall_alias[0]
 
-        if not alias_domain:
-            raise ValidationError(_("No catchall domain is set in the system parameters.  Please set one and try again."))
-        mailcow_alias = self.env['mail.mailcow.alias'].search([('address', '=', alias.alias_name + '@' + alias_domain)])
-        if mailcow_alias:
-            mailcow_alias.write({'active': True})
-        else:
-            self.env['mail.mailcow.alias'].create({
-                'address': alias.alias_name + '@' + alias_domain,
-                'goto': catchall_alias + '@' + alias_domain,
-                'alias_id': alias.id,
-            })
+        if alias_domain:
+            mailcow_alias = self.env['mail.mailcow.alias'].search([('address', '=', alias.alias_name + '@' + alias_domain)])
+            if mailcow_alias:
+                mailcow_alias.write({'active': True})
+            else:
+                self.env['mail.mailcow.alias'].create({
+                    'address': alias.alias_name + '@' + alias_domain,
+                    'goto': catchall_alias + '@' + alias_domain,
+                    'alias_id': alias.id,
+                })
         return alias
diff --git a/bemade_mailcow_integration/models/mailcow.py b/bemade_mailcow_integration/models/mailcow.py
index 6f38c64..2b9b9d8 100644
--- a/bemade_mailcow_integration/models/mailcow.py
+++ b/bemade_mailcow_integration/models/mailcow.py
@@ -16,8 +16,8 @@ class MailMailcow(models.AbstractModel):
     def get_credentials(self):
         params = self.env['ir.config_parameter'].sudo()
 
-        base_url = params.get_param('mailcow.base_url')[0],
-        api_key = params.get_param('mailcow.api_key')[0],
+        base_url = params.get_param('mailcow.base_url')
+        api_key = params.get_param('mailcow.api_key')
 
         if not base_url or not api_key:
             _logger.error('No API key or base URL is set in the system parameters')
diff --git a/bemade_mailcow_integration/models/mailcow_blacklist.py b/bemade_mailcow_integration/models/mailcow_blacklist.py
index 374e7b6..3e3ba81 100644
--- a/bemade_mailcow_integration/models/mailcow_blacklist.py
+++ b/bemade_mailcow_integration/models/mailcow_blacklist.py
@@ -2,6 +2,7 @@
 
 from odoo import models, fields, api
 import logging
+import json
 
 _logger = logging.getLogger(__name__)
 
@@ -28,17 +29,14 @@ class MailcowBlacklist(models.Model):
             'object_list': 'bl'
         }
 
-
-
         self.api_request(endpoint_add, 'POST', data)
         _logger.info(f'Added {vals["email"]} to Mailcow blacklist')
 
-        allblemail = self.api_request(endpoint_get_bl, 'GET', None)
+        bl_emails = self.api_request(endpoint_get_bl, 'GET', None)
 
-        mc_id = [d['prefid'] for d in allblemail if d['value'] == vals['email']]
+        mc_id = [d['prefid'] for d in bl_emails if d['value'] == vals['email']]
         vals['mc_id'] = mc_id[0]
         res = super().create(vals)
-
         return res
 
     def write(self, vals):
@@ -65,13 +63,10 @@ class MailcowBlacklist(models.Model):
         """
         Overridden unlink method to remove the blacklist entry from the Mailcow server.
         """
+        endpoint = '/api/v1/delete/domain-policy'
         for record in self:
-            endpoint = '/api/v1/delete/domain-policy'
-            data = {
-                'items': [record.mc_id]
-            }
-            result  = record.api_request(endpoint, 'POST', data)
-            print(result)
+            data = json.dumps(record.mc_id)
+            self.api_request(endpoint, 'POST', data)
             _logger.info(f'Removed {record.email} from Mailcow blacklist')
         return super().unlink()
 
diff --git a/bemade_mailcow_integration/models/res_config_settings.py b/bemade_mailcow_integration/models/res_config_settings.py
index 1b91c36..07d285a 100644
--- a/bemade_mailcow_integration/models/res_config_settings.py
+++ b/bemade_mailcow_integration/models/res_config_settings.py
@@ -13,3 +13,8 @@ class ResConfigSettings(models.TransientModel):
         help="API key for the Mailcow server",
         config_parameter='mailcow.api_key',
     )
+
+    mailcow_sync_alias = fields.Boolean(
+        string='Sync Aliases with Odoo',
+        help='Auto create Aliases in Mailcow from Odoo',
+        config_parameter='mailcow.sync_alias')
\ No newline at end of file
diff --git a/bemade_mailcow_integration/views/res_config_settings_views.xml b/bemade_mailcow_integration/views/res_config_settings_views.xml
index 12392f9..d641fc7 100644
--- a/bemade_mailcow_integration/views/res_config_settings_views.xml
+++ b/bemade_mailcow_integration/views/res_config_settings_views.xml
@@ -24,6 +24,13 @@
                             <div class="content-group">
                                 <field name="mailcow_api_key"/>
                             </div>
+                            <label for="mailcow_sync_alias" string="Sync Aliases with Odoo'"/>
+                            <div class="text-muted">
+                                Auto create Aliases in Mailcow from Odoo
+                            </div>
+                            <div class="content-group">
+                                <field name="mailcow_sync_alias"/>
+                            </div>
                         </div>
                     </div>
                 </div>