diff --git a/assets/components/search/EntitiesList.tsx b/assets/components/search/EntitiesList.tsx
index bf6e1fd..8ea11f7 100644
--- a/assets/components/search/EntitiesList.tsx
+++ b/assets/components/search/EntitiesList.tsx
@@ -1,4 +1,4 @@
-import {List, Tag, Tooltip, Typography} from 'antd'
+import {Flex, List, Tag, Tooltip, Typography} from 'antd'
 import React from 'react'
 import type {Domain} from '../../utils/api'
 import {rdapRoleDetailTranslation, rdapRoleTranslation} from '../../utils/functions/rdapTranslation'
@@ -37,7 +37,9 @@ export function EntitiesList({domain}: { domain: Domain }) {
                             {details.organization && <div>🏢 {details.organization}</div>}
                         </>}
                     />
-                    {e.roles.map(roleToTag)}
+                    <Flex gap='4px 0' wrap>
+                        {e.roles.map(roleToTag)}
+                    </Flex>
                 </List.Item>
             }}
         />
diff --git a/config/packages/messenger.yaml b/config/packages/messenger.yaml
index 38a0041..8a72323 100644
--- a/config/packages/messenger.yaml
+++ b/config/packages/messenger.yaml
@@ -27,6 +27,7 @@ framework:
             App\Message\SendDomainEventNotif: async
             App\Message\UpdateDomainsFromWatchlist: async
             App\Message\UpdateRdapServers: async
+            App\Message\ValidateConnectorCredentials: async
 
             # Route your messages to the transports
             # 'App\Message\YourMessage': async
diff --git a/src/Controller/ConnectorController.php b/src/Controller/ConnectorController.php
index 9d39154..da98b09 100644
--- a/src/Controller/ConnectorController.php
+++ b/src/Controller/ConnectorController.php
@@ -24,7 +24,7 @@ class ConnectorController extends AbstractController
         private readonly EntityManagerInterface $em,
         private readonly LoggerInterface $logger,
         #[Autowire(service: 'service_container')]
-        private ContainerInterface $locator,
+        private readonly ContainerInterface $locator,
     ) {
     }
 
diff --git a/src/Message/ValidateConnectorCredentials.php b/src/Message/ValidateConnectorCredentials.php
new file mode 100644
index 0000000..3383718
--- /dev/null
+++ b/src/Message/ValidateConnectorCredentials.php
@@ -0,0 +1,16 @@
+<?php
+
+namespace App\Message;
+
+final class ValidateConnectorCredentials
+{
+    /*
+     * Add whatever properties and methods you need
+     * to hold the data for this message class.
+     */
+
+    // public function __construct(
+    //     public readonly string $name,
+    // ) {
+    // }
+}
diff --git a/src/MessageHandler/ValidateConnectorCredentialsHandler.php b/src/MessageHandler/ValidateConnectorCredentialsHandler.php
new file mode 100644
index 0000000..2f9174c
--- /dev/null
+++ b/src/MessageHandler/ValidateConnectorCredentialsHandler.php
@@ -0,0 +1,53 @@
+<?php
+
+namespace App\MessageHandler;
+
+use App\Message\ValidateConnectorCredentials;
+use App\Notifier\ValidateConnectorCredentialsErrorNotification;
+use App\Repository\ConnectorRepository;
+use App\Service\Connector\AbstractProvider;
+use Symfony\Component\DependencyInjection\Attribute\Autowire;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\Mailer\Exception\TransportExceptionInterface;
+use Symfony\Component\Mailer\MailerInterface;
+use Symfony\Component\Messenger\Attribute\AsMessageHandler;
+use Symfony\Component\Mime\Address;
+use Symfony\Component\Notifier\Recipient\Recipient;
+
+#[AsMessageHandler]
+final readonly class ValidateConnectorCredentialsHandler
+{
+    public function __construct(
+        private ConnectorRepository $connectorRepository,
+        #[Autowire(service: 'service_container')]
+        private ContainerInterface $locator,
+        private MailerInterface $mailer,
+    ) {
+    }
+
+    /**
+     * @throws TransportExceptionInterface
+     */
+    public function __invoke(ValidateConnectorCredentials $message): void
+    {
+        foreach ($this->connectorRepository->findAll() as $connector) {
+            $provider = $connector->getProvider();
+
+            try {
+                if (null === $provider) {
+                    throw new \Exception('Provider not found');
+                }
+
+                /** @var AbstractProvider $providerClient */
+                $providerClient = $this->locator->get($provider->getConnectorProvider());
+                $providerClient->authenticate($connector->getAuthData());
+            } catch (\Exception) {
+                $email = $connector->getUser()->getEmail();
+                $this->mailer->send(
+                    (new ValidateConnectorCredentialsErrorNotification(new Address($email), $connector))
+                        ->asEmailMessage(new Recipient($email))->getMessage()
+                );
+            }
+        }
+    }
+}
diff --git a/src/Notifier/ValidateConnectorCredentialsErrorNotification.php b/src/Notifier/ValidateConnectorCredentialsErrorNotification.php
new file mode 100644
index 0000000..a1927da
--- /dev/null
+++ b/src/Notifier/ValidateConnectorCredentialsErrorNotification.php
@@ -0,0 +1,33 @@
+<?php
+
+namespace App\Notifier;
+
+use App\Entity\Connector;
+use Symfony\Bridge\Twig\Mime\TemplatedEmail;
+use Symfony\Component\Mime\Address;
+use Symfony\Component\Notifier\Message\EmailMessage;
+use Symfony\Component\Notifier\Notification\Notification;
+use Symfony\Component\Notifier\Recipient\EmailRecipientInterface;
+
+class ValidateConnectorCredentialsErrorNotification extends Notification
+{
+    public function __construct(
+        private readonly Address $sender,
+        private readonly Connector $connector,
+    ) {
+        parent::__construct();
+    }
+
+    public function asEmailMessage(EmailRecipientInterface $recipient): EmailMessage
+    {
+        return new EmailMessage((new TemplatedEmail())
+            ->from($this->sender)
+            ->to($recipient->getEmail())
+            ->subject('Connector credentials error')
+            ->htmlTemplate('emails/errors/connector_credentials.html.twig')
+            ->locale('en')
+            ->context([
+                'connector' => $this->connector,
+            ]));
+    }
+}
diff --git a/src/Scheduler/ValidateConnectorCredentialsSchedule.php b/src/Scheduler/ValidateConnectorCredentialsSchedule.php
new file mode 100644
index 0000000..cf64f6e
--- /dev/null
+++ b/src/Scheduler/ValidateConnectorCredentialsSchedule.php
@@ -0,0 +1,29 @@
+<?php
+
+namespace App\Scheduler;
+
+use App\Message\ValidateConnectorCredentials;
+use Symfony\Component\Scheduler\Attribute\AsSchedule;
+use Symfony\Component\Scheduler\RecurringMessage;
+use Symfony\Component\Scheduler\Schedule;
+use Symfony\Component\Scheduler\ScheduleProviderInterface;
+use Symfony\Contracts\Cache\CacheInterface;
+
+#[AsSchedule('ValidateConnectorCredentials')]
+final class ValidateConnectorCredentialsSchedule implements ScheduleProviderInterface
+{
+    public function __construct(
+        private CacheInterface $cache,
+    ) {
+    }
+
+    public function getSchedule(): Schedule
+    {
+        return (new Schedule())
+            ->add(
+                RecurringMessage::every('1 week', new ValidateConnectorCredentials()),
+            )
+            ->stateful($this->cache)
+        ;
+    }
+}
diff --git a/templates/emails/errors/connector_credentials.twig b/templates/emails/errors/connector_credentials.twig
new file mode 100644
index 0000000..b10f514
--- /dev/null
+++ b/templates/emails/errors/connector_credentials.twig
@@ -0,0 +1,22 @@
+{% extends "emails/base.html.twig" %}
+
+{% set email_color = '#f9f9f9' %}
+{% set title = 'Connector Validation Failed' %}
+{% block content %}
+    <p>Hello, <br/>
+        We would like to inform you that an authentication error occurred during the weekly validation of the following connector:<br/>
+        <strong>Connector ID:</strong> {{ connector.token }}<br/>
+        <strong>Connector Provider:</strong> {{ connector.provider }}<br/>
+    </p>
+    <p>This issue indicates that the login credentials provided for the connector could not be validated. As a result, we were unable to verify the connector's validity.</p>
+    <p>Here are some possible causes:</p>
+    <ul>
+        <li>The login credentials for the connector may have been changed or are incorrect.</li>
+        <li>A temporary issue with the authentication server or service may have occurred.</li>
+    </ul>
+    <br/><br/>
+    <p>To resolve this issue, please verify the login credentials associated with the connector and update them if necessary.</p>
+    <p>Thank you for your attention,<br/>
+        Sincerely,<br/>
+    </p>
+{% endblock %}