diff --git a/src/models/notification/notifications.models.ts b/src/models/notification/notifications.models.ts
index da7f109bb..f61a551ad 100644
--- a/src/models/notification/notifications.models.ts
+++ b/src/models/notification/notifications.models.ts
@@ -33,6 +33,22 @@ export type NotificationMarkAllReadResponse = OperationResponse<{
   read: true;
 }>;
 
+/**
+ * Response from `deleteNotifications()`.
+ *
+ * `notificationIds` echoes the IDs that were deleted.
+ */
+export type NotificationDeleteResponse = OperationResponse<{
+  notificationIds: string[];
+}>;
+
+/**
+ * Response from `deleteAll()`.
+ */
+export type NotificationDeleteAllResponse = OperationResponse<{
+  all: true;
+}>;
+
 /**
  * Public surface of the Notifications service. JSDoc on this interface drives
  * the generated API reference documentation.
@@ -132,4 +148,38 @@ export interface NotificationServiceModel {
    * ```
    */
   markAllRead(tenantId: string): Promise<NotificationMarkAllReadResponse>;
+
+  /**
+   * Deletes the given notifications.
+   *
+   * @param tenantId - Tenant GUID (sent via `X-UIPATH-Internal-TenantId`)
+   * @param notificationIds - GUIDs of notifications to delete. Must be non-empty —
+   *   the server rejects an empty array with HTTP 400.
+   * @returns Operation result echoing the deleted IDs
+   * {@link NotificationDeleteResponse}
+   *
+   * @example
+   * ```typescript
+   * await notifications.deleteNotifications('<tenantId>', ['<notificationId-1>', '<notificationId-2>']);
+   * ```
+   * @internal
+   */
+  deleteNotifications(tenantId: string, notificationIds: string[]): Promise<NotificationDeleteResponse>;
+
+  /**
+   * Deletes all notifications from the current user's inbox.
+   *
+   * Uses the server-side `deleteAll` flag — no per-notification IDs are sent.
+   *
+   * @param tenantId - Tenant GUID (sent via `X-UIPATH-Internal-TenantId`)
+   * @returns Operation result confirming the bulk delete
+   * {@link NotificationDeleteAllResponse}
+   *
+   * @example
+   * ```typescript
+   * await notifications.deleteAll('<tenantId>');
+   * ```
+   * @internal
+   */
+  deleteAll(tenantId: string): Promise<NotificationDeleteAllResponse>;
 }
diff --git a/src/services/notification/notifications.ts b/src/services/notification/notifications.ts
index f53ab6d00..143decf78 100644
--- a/src/services/notification/notifications.ts
+++ b/src/services/notification/notifications.ts
@@ -10,6 +10,8 @@ import type {
   NotificationGetResponse,
 } from '../../models/notification/notifications.types';
 import type {
+  NotificationDeleteAllResponse,
+  NotificationDeleteResponse,
   NotificationMarkAllReadResponse,
   NotificationServiceModel,
   NotificationUpdateReadResponse,
@@ -169,6 +171,56 @@ export class NotificationService extends BaseService implements NotificationServ
     return { success: true, data: { all: true, read: true } };
   }
 
+  /**
+   * Deletes the given notifications.
+   *
+   * @param tenantId - Tenant GUID (sent via `X-UIPATH-Internal-TenantId`)
+   * @param notificationIds - GUIDs of notifications to delete. Must be non-empty —
+   *   the server rejects an empty array with HTTP 400.
+   * @returns Operation result echoing the deleted IDs
+   * {@link NotificationDeleteResponse}
+   *
+   * @example
+   * ```typescript
+   * await notifications.deleteNotifications('<tenantId>', ['<notificationId-1>', '<notificationId-2>']);
+   * ```
+   * @internal
+   */
+  @track('Notifications.DeleteNotifications')
+  async deleteNotifications(tenantId: string, notificationIds: string[]): Promise<NotificationDeleteResponse> {
+    await this.post(NOTIFICATION_ENDPOINTS.DELETE_BULK, {
+      // API spec misspells the key as `notifcationIds` — preserve it.
+      notifcationIds: notificationIds,
+      deleteAll: false,
+    }, { headers: createHeaders({ [TENANT_ID]: tenantId }) });
+    return { success: true, data: { notificationIds } };
+  }
+
+  /**
+   * Deletes all notifications from the current user's inbox.
+   *
+   * Uses the server-side `deleteAll` flag — no per-notification IDs are sent.
+   *
+   * @param tenantId - Tenant GUID (sent via `X-UIPATH-Internal-TenantId`)
+   * @returns Operation result confirming the bulk delete
+   * {@link NotificationDeleteAllResponse}
+   *
+   * @example
+   * ```typescript
+   * await notifications.deleteAll('<tenantId>');
+   * ```
+   * @internal
+   */
+  @track('Notifications.DeleteAll')
+  async deleteAll(tenantId: string): Promise<NotificationDeleteAllResponse> {
+    await this.post(NOTIFICATION_ENDPOINTS.DELETE_BULK, {
+      // API spec misspells the key as `notifcationIds` — preserve it.
+      notifcationIds: [],
+      deleteAll: true,
+    }, { headers: createHeaders({ [TENANT_ID]: tenantId }) });
+    return { success: true, data: { all: true } };
+  }
+
   private async updateRead(
     tenantId: string,
     notificationIds: string[],
diff --git a/src/utils/constants/endpoints/notification.ts b/src/utils/constants/endpoints/notification.ts
index ab5c00a39..211bee2c6 100644
--- a/src/utils/constants/endpoints/notification.ts
+++ b/src/utils/constants/endpoints/notification.ts
@@ -16,4 +16,5 @@ const NOTIFICATION_API_BASE = `${NOTIFICATION_BASE}/notificationserviceapi`;
 export const NOTIFICATION_ENDPOINTS = {
   GET_ALL: `${NOTIFICATION_API_BASE}/odata/v1/NotificationEntry`,
   UPDATE_READ: `${NOTIFICATION_API_BASE}/odata/v1/NotificationEntry/UiPath.NotificationService.Api.UpdateRead`,
+  DELETE_BULK: `${NOTIFICATION_API_BASE}/odata/v1/NotificationEntry/UiPath.NotificationService.Api.DeleteBulk`,
 } as const;
diff --git a/tests/integration/shared/notification/notifications.integration.test.ts b/tests/integration/shared/notification/notifications.integration.test.ts
index c9099f92c..5a5c6b69a 100644
--- a/tests/integration/shared/notification/notifications.integration.test.ts
+++ b/tests/integration/shared/notification/notifications.integration.test.ts
@@ -109,4 +109,7 @@ describe.each(modes)('Notifications - Integration Tests [%s]', (mode) => {
       expect(result.data).toEqual({ all: true, read: true });
     });
   });
+
+  // Note: no deleteNotifications / deleteAll integration tests — these destructively
+  // mutate the inbox with no SDK-level undo. Run manually if needed.
 });
diff --git a/tests/unit/services/notification/notifications.test.ts b/tests/unit/services/notification/notifications.test.ts
index 314960eb9..6efc230ee 100644
--- a/tests/unit/services/notification/notifications.test.ts
+++ b/tests/unit/services/notification/notifications.test.ts
@@ -186,6 +186,56 @@ describe('NotificationService Unit Tests', () => {
     });
   });
 
+  describe('deleteNotifications', () => {
+    it('should POST notifcationIds (preserving the API typo), deleteAll=false, and tenant header', async () => {
+      mockApiClient.post.mockResolvedValue(undefined);
+      const ids = [
+        NOTIFICATION_TEST_CONSTANTS.NOTIFICATION_ID,
+        NOTIFICATION_TEST_CONSTANTS.NOTIFICATION_ID_2,
+      ];
+
+      const result = await notificationService.deleteNotifications(NOTIFICATION_TEST_CONSTANTS.TENANT_ID, ids);
+
+      expect(mockApiClient.post).toHaveBeenCalledWith(
+        NOTIFICATION_ENDPOINTS.DELETE_BULK,
+        { notifcationIds: ids, deleteAll: false },
+        { headers: TENANT_HEADER }
+      );
+      expect(result).toEqual({ success: true, data: { notificationIds: ids } });
+    });
+
+    it('should propagate errors', async () => {
+      mockApiClient.post.mockRejectedValue(createMockError(TEST_CONSTANTS.ERROR_MESSAGE));
+
+      await expect(
+        notificationService.deleteNotifications(NOTIFICATION_TEST_CONSTANTS.TENANT_ID, [NOTIFICATION_TEST_CONSTANTS.NOTIFICATION_ID])
+      ).rejects.toThrow(TEST_CONSTANTS.ERROR_MESSAGE);
+    });
+  });
+
+  describe('deleteAll', () => {
+    it('should POST deleteAll=true with empty notifcationIds array and tenant header', async () => {
+      mockApiClient.post.mockResolvedValue(undefined);
+
+      const result = await notificationService.deleteAll(NOTIFICATION_TEST_CONSTANTS.TENANT_ID);
+
+      expect(mockApiClient.post).toHaveBeenCalledWith(
+        NOTIFICATION_ENDPOINTS.DELETE_BULK,
+        { notifcationIds: [], deleteAll: true },
+        { headers: TENANT_HEADER }
+      );
+      expect(result).toEqual({ success: true, data: { all: true } });
+    });
+
+    it('should propagate errors', async () => {
+      mockApiClient.post.mockRejectedValue(createMockError(TEST_CONSTANTS.ERROR_MESSAGE));
+
+      await expect(
+        notificationService.deleteAll(NOTIFICATION_TEST_CONSTANTS.TENANT_ID)
+      ).rejects.toThrow(TEST_CONSTANTS.ERROR_MESSAGE);
+    });
+  });
+
   describe('stripInternalNotificationFields', () => {
     it('removes all 8 internal fields without mutating the original', () => {
       const raw: RawNotificationEntry = createBasicNotificationEntry();