diff --git a/src/main/java/de/assecutor/votianlt/pages/view/JobSummaryView.java b/src/main/java/de/assecutor/votianlt/pages/view/JobSummaryView.java
index b385f52..9e2d32b 100644
--- a/src/main/java/de/assecutor/votianlt/pages/view/JobSummaryView.java
+++ b/src/main/java/de/assecutor/votianlt/pages/view/JobSummaryView.java
@@ -10,6 +10,8 @@ import com.vaadin.flow.component.dialog.Dialog;
 import com.vaadin.flow.component.button.Button;
 import com.vaadin.flow.component.button.ButtonVariant;
 import com.vaadin.flow.component.html.H4;
+import com.vaadin.flow.component.notification.Notification;
+import com.vaadin.flow.component.notification.NotificationVariant;
 import com.vaadin.flow.component.icon.Icon;
 import com.vaadin.flow.component.icon.VaadinIcon;
 import com.vaadin.flow.router.BeforeEvent;
@@ -41,6 +43,7 @@ import de.assecutor.votianlt.model.Barcode;
 import de.assecutor.votianlt.model.Photo;
 import de.assecutor.votianlt.model.Comment;
 import de.assecutor.votianlt.pages.service.AppUserService;
+import de.assecutor.votianlt.service.MessageService;
 import jakarta.annotation.security.RolesAllowed;
 import org.bson.types.ObjectId;
 
@@ -63,13 +66,15 @@ public class JobSummaryView extends Main implements HasUrlParameter<String> {
     private final PhotoRepository photoRepository;
     private final CommentRepository commentRepository;
     private final AppUserService appUserService;
+    private final MessageService messageService;
 
     private final VerticalLayout content;
     private final List<Div> taskCards = new ArrayList<>();
 
     public JobSummaryView(JobRepository jobRepository, CargoItemRepository cargoItemRepository,
             TaskRepository taskRepository, SignatureRepository signatureRepository, BarcodeRepository barcodeRepository,
-            PhotoRepository photoRepository, CommentRepository commentRepository, AppUserService appUserService) {
+            PhotoRepository photoRepository, CommentRepository commentRepository, AppUserService appUserService,
+            MessageService messageService) {
         this.jobRepository = jobRepository;
         this.cargoItemRepository = cargoItemRepository;
         this.taskRepository = taskRepository;
@@ -78,6 +83,7 @@ public class JobSummaryView extends Main implements HasUrlParameter<String> {
         this.photoRepository = photoRepository;
         this.commentRepository = commentRepository;
         this.appUserService = appUserService;
+        this.messageService = messageService;
 
         setSizeFull();
         addClassNames(LumoUtility.BoxSizing.BORDER, LumoUtility.Display.FLEX, LumoUtility.FlexDirection.COLUMN,
@@ -119,6 +125,32 @@ public class JobSummaryView extends Main implements HasUrlParameter<String> {
             return;
         }
 
+        // Create Send Message Button for toolbar
+        Button sendMessageButton = new Button("Nachricht senden");
+        sendMessageButton.addThemeVariants(ButtonVariant.LUMO_PRIMARY);
+        sendMessageButton.addClickListener(e -> {
+            // Check if job has an app user assigned
+            if (job.getAppUser() == null || job.getAppUser().isBlank()) {
+                Notification.show(
+                    "Diesem Auftrag ist kein App-Nutzer zugeordnet",
+                    3000,
+                    Notification.Position.MIDDLE
+                ).addThemeVariants(NotificationVariant.LUMO_ERROR);
+                return;
+            }
+            
+            String appUserId = job.getAppUser();
+            String jobNumber = job.getJobNumber() != null ? job.getJobNumber() : job.getId().toHexString();
+            
+            // Check if messages exist for this job
+            List<de.assecutor.votianlt.model.Message> existingMessages = messageService.getMessagesForJob(job.getId());
+            
+            // Navigate to message details view with job conversation
+            // Format: message-details/{clientId}/job-{jobNumber}
+            String conversationId = "job-" + jobNumber;
+            getUI().ifPresent(ui -> ui.navigate("message-details/" + appUserId + "/" + conversationId));
+        });
+
         // Create Job History Button for toolbar
         Button jobHistoryButton = new Button("Job Historie");
         jobHistoryButton.addThemeVariants(ButtonVariant.LUMO_PRIMARY);
@@ -126,8 +158,8 @@ public class JobSummaryView extends Main implements HasUrlParameter<String> {
             getUI().ifPresent(ui -> ui.navigate("job_history/" + job.getId().toHexString()));
         });
 
-        // Add toolbar with Job History button in top right
-        add(new ViewToolbar("Zusammenfassung", jobHistoryButton));
+        // Add toolbar with both buttons in top right (Send Message button on the left)
+        add(new ViewToolbar("Zusammenfassung", sendMessageButton, jobHistoryButton));
 
         List<CargoItem> cargo = cargoItemRepository.findByJobId(jobId);
         List<BaseTask> tasks = taskRepository.findByJobIdOrderByTaskOrderAsc(jobId);
diff --git a/src/main/java/de/assecutor/votianlt/pages/view/ShowJobsView.java b/src/main/java/de/assecutor/votianlt/pages/view/ShowJobsView.java
index 9af9221..91780cc 100644
--- a/src/main/java/de/assecutor/votianlt/pages/view/ShowJobsView.java
+++ b/src/main/java/de/assecutor/votianlt/pages/view/ShowJobsView.java
@@ -114,9 +114,6 @@ public class ShowJobsView extends VerticalLayout {
         java.time.LocalDateTime endDt = end != null ? end.atTime(23, 59, 59)
                 : java.time.LocalDate.now().atTime(23, 59, 59);
 
-        // Aktuellen Benutzer (ObjectId Hex) ermitteln
-        String currentUserIdHex = securityService.getCurrentUserId().toHexString();
-
         // Status-Filter bestimmen
         String selectedStatus = statusFilter.getValue();
         java.util.List<JobStatus> statusList;
@@ -139,8 +136,7 @@ public class ShowJobsView extends VerticalLayout {
                                                                                                                  // leer
 
         // Verwende die erweiterte Suchmethode
-        var filteredJobs = jobRepository.findWithFilters(startDt, endDt, currentUserIdHex, jobNumberPattern,
-                statusList);
+        var filteredJobs = jobRepository.findWithFilters(startDt, endDt, jobNumberPattern, statusList);
         grid.setItems(filteredJobs);
     }
 
diff --git a/src/main/java/de/assecutor/votianlt/repository/JobRepository.java b/src/main/java/de/assecutor/votianlt/repository/JobRepository.java
index 3cb4cfe..dd9a549 100644
--- a/src/main/java/de/assecutor/votianlt/repository/JobRepository.java
+++ b/src/main/java/de/assecutor/votianlt/repository/JobRepository.java
@@ -99,8 +99,8 @@ public interface JobRepository extends MongoRepository<Job, ObjectId> {
     /**
      * Erweiterte Suche: Zeitraum, Auftragsnummer und Status kombiniert
      */
-    @Query("{'createdAt': {'$gte': ?0, '$lte': ?1}, 'createdBy': ?2, "
-            + "'jobNumber': {'$regex': ?3, '$options': 'i'}, " + "'status': {'$in': ?4}}")
-    List<Job> findWithFilters(LocalDateTime startDate, LocalDateTime endDate, String createdBy, String jobNumberPattern,
+    @Query("{'createdAt': {'$gte': ?0, '$lte': ?1}, "
+            + "'jobNumber': {'$regex': ?2, '$options': 'i'}, " + "'status': {'$in': ?3}}")
+    List<Job> findWithFilters(LocalDateTime startDate, LocalDateTime endDate, String jobNumberPattern,
             List<JobStatus> statusList);
 }