diff --git a/src/main/java/com/gepardec/mega/rest/impl/MailResourceImpl.java b/src/main/java/com/gepardec/mega/rest/impl/MailResourceImpl.java
index 6ca453dc..7c51a08c 100644
--- a/src/main/java/com/gepardec/mega/rest/impl/MailResourceImpl.java
+++ b/src/main/java/com/gepardec/mega/rest/impl/MailResourceImpl.java
@@ -4,6 +4,8 @@
 import com.gepardec.mega.notification.mail.ReminderEmailSender;
 import com.gepardec.mega.notification.mail.receiver.MailReceiver;
 import com.gepardec.mega.rest.api.MailResource;
+import io.quarkus.oidc.Tenant;
+import io.quarkus.security.Authenticated;
 import jakarta.enterprise.context.RequestScoped;
 import jakarta.inject.Inject;
 import jakarta.ws.rs.core.HttpHeaders;
@@ -74,15 +76,17 @@ public LocalDateTime ping() {
     @Claim(standard = Claims.email)
     ClaimValue<String> email;
 
+    @Tenant("pubsub")
+    @Authenticated
     @Override
     public LocalDateTime postPing(HttpHeaders httpHeaders) {
         logger.info("Received POST request");
         logger.info("Headers: {}", httpHeaders.getRequestHeaders());
         logger.info("Email: {}", email.getValue());
 
-        if (!"gepardec-service-mail@mega-260510.iam.gserviceaccount.com".equals(email.getValue())) {
-            throw new UnauthorizedException("Account not authorized to access this resource.");
-        }
+//        if (!"gepardec-service-mail@mega-260510.iam.gserviceaccount.com".equals(email.getValue())) {
+//            throw new UnauthorizedException("Account not authorized to access this resource.");
+//        }
 
         return LocalDateTime.now();
     }
diff --git a/src/main/resources/application.yaml b/src/main/resources/application.yaml
index f88ab824..89232204 100644
--- a/src/main/resources/application.yaml
+++ b/src/main/resources/application.yaml
@@ -102,11 +102,11 @@ quarkus:
       roles:
         source: accesstoken
         role-claim-path: "resource_access/mega-cron/roles"
-    google:
-      auth-server-url: "https://accounts.google.com"
-      application-type: "service"
-      token:
-        issuer: "https://accounts.google.com"
+    pubsub:
+      provider: google
+
+
+
 
 mp:
   openapi: