diff --git a/includes/class-siti-stock-admin.php b/includes/class-siti-stock-admin.php
index 4e615a7..4202f63 100644
--- a/includes/class-siti-stock-admin.php
+++ b/includes/class-siti-stock-admin.php
@@ -301,6 +301,7 @@ class Siti_Stock_Admin {
 								<th><?php esc_html_e( 'Leverancier', 'siti-stock-plugin' ); ?></th>
 								<th><?php esc_html_e( 'Tijd (24u)', 'siti-stock-plugin' ); ?></th>
 								<th><?php esc_html_e( 'Automatisch verzenden', 'siti-stock-plugin' ); ?></th>
+								<th><?php esc_html_e( 'Geen mail zonder orders', 'siti-stock-plugin' ); ?></th>
 							</tr>
 						</thead>
 						<tbody>
@@ -327,6 +328,17 @@ class Siti_Stock_Admin {
 											<?php esc_html_e( 'Activeer e-mail', 'siti-stock-plugin' ); ?>
 										</label>
 									</td>
+									<td>
+										<label>
+											<input
+												type="checkbox"
+												name="<?php echo esc_attr( 'supplier_exports[' . $key . '][skip_empty]' ); ?>"
+												value="1"
+												<?php checked( ! empty( $config['skip_empty'] ) ); ?>
+											/>
+											<?php esc_html_e( 'Sla lege export over', 'siti-stock-plugin' ); ?>
+										</label>
+									</td>
 								</tr>
 							<?php endforeach; ?>
 						</tbody>
diff --git a/includes/class-siti-stock-supplier-exports.php b/includes/class-siti-stock-supplier-exports.php
index 9f9a3ef..e13f469 100644
--- a/includes/class-siti-stock-supplier-exports.php
+++ b/includes/class-siti-stock-supplier-exports.php
@@ -54,6 +54,7 @@ class Siti_Stock_Supplier_Exports {
 	 * @param string $supplier_key Supplier identifier.
 	 */
 	public function run_scheduled_export( $supplier_key ) {
+		$this->schedule_next_supplier_run( $supplier_key );
 		$this->send_export( $supplier_key );
 	}
 
@@ -69,7 +70,12 @@ class Siti_Stock_Supplier_Exports {
 				continue;
 			}
 
-			if ( ! wp_next_scheduled( self::CRON_HOOK, array( $key ) ) ) {
+			$scheduled_event = function_exists( 'wp_get_scheduled_event' )
+				? wp_get_scheduled_event( self::CRON_HOOK, array( $key ) )
+				: false;
+
+			if ( ! $scheduled_event || ! empty( $scheduled_event->schedule ) ) {
+				$this->clear_schedule_for_supplier( $key );
 				$this->schedule_supplier( $key, $config );
 			}
 		}
@@ -116,6 +122,15 @@ class Siti_Stock_Supplier_Exports {
 
 		if ( is_wp_error( $result ) ) {
 			$this->notices->add_notice( $result->get_error_message(), 'error' );
+		} elseif ( ! empty( $result['skipped_empty'] ) ) {
+			$this->notices->add_notice(
+				sprintf(
+					/* translators: %s supplier label */
+					__( 'Geen export verzonden voor %s omdat er geen orders zijn gevonden.', 'siti-stock-plugin' ),
+					isset( $result['label'] ) ? $result['label'] : $supplier_key
+				),
+				'info'
+			);
 		} else {
 			$this->notices->add_notice(
 				sprintf(
@@ -227,6 +242,14 @@ class Siti_Stock_Supplier_Exports {
 
 		$data = $this->collect_rows_for_supplier( $config['supplier'] );
 
+		if ( empty( $data['rows'] ) && ! empty( $config['skip_empty'] ) ) {
+			return array(
+				'label'         => $config['supplier'],
+				'rows'          => 0,
+				'skipped_empty' => true,
+			);
+		}
+
 		$admin_email = get_option( 'admin_email' );
 		if ( ! $admin_email || ! is_email( $admin_email ) ) {
 			return new WP_Error( 'siti_stock_missing_email', __( 'Admin e-mailadres kon niet worden opgehaald.', 'siti-stock-plugin' ) );
@@ -290,6 +313,7 @@ class Siti_Stock_Supplier_Exports {
 				'supplier' => isset( $config['supplier'] ) ? $config['supplier'] : '',
 				'time'     => $time,
 				'enabled'  => ! empty( $row['enabled'] ),
+				'skip_empty' => ! empty( $row['skip_empty'] ),
 			);
 		}
 
@@ -456,7 +480,23 @@ class Siti_Stock_Supplier_Exports {
 		}
 
 		$timestamp = $this->calculate_next_timestamp( $config['time'] );
-		wp_schedule_event( $timestamp, 'daily', self::CRON_HOOK, array( $supplier_key ) );
+		wp_schedule_single_event( $timestamp, self::CRON_HOOK, array( $supplier_key ) );
+	}
+
+	/**
+	 * Schedule the next supplier run using the site's configured timezone.
+	 *
+	 * @param string $supplier_key Key.
+	 */
+	private function schedule_next_supplier_run( $supplier_key ) {
+		$config = $this->get_supplier_config( $supplier_key );
+
+		if ( empty( $config ) || empty( $config['enabled'] ) || empty( $config['time'] ) ) {
+			return;
+		}
+
+		$this->clear_schedule_for_supplier( $supplier_key );
+		$this->schedule_supplier( $supplier_key, $config );
 	}
 
 	/**
@@ -491,6 +531,7 @@ class Siti_Stock_Supplier_Exports {
 					isset( $existing['time'] ) ? $existing['time'] : $this->get_default_time_for_key( $key )
 				),
 				'enabled'  => isset( $existing['enabled'] ) ? (bool) $existing['enabled'] : $this->is_default_enabled( $key ),
+				'skip_empty' => isset( $existing['skip_empty'] ) ? (bool) $existing['skip_empty'] : $this->is_default_skip_empty( $key ),
 			);
 		}
 
@@ -593,26 +634,31 @@ class Siti_Stock_Supplier_Exports {
 				'label'   => 'Orion',
 				'time'    => '09:00',
 				'enabled' => true,
+				'skip_empty' => false,
 			),
 			'shots'       => array(
 				'label'   => 'Shots',
 				'time'    => '10:00',
 				'enabled' => true,
+				'skip_empty' => false,
 			),
 			'stots'       => array(
 				'label'   => 'Stots',
 				'time'    => '10:00',
 				'enabled' => true,
+				'skip_empty' => false,
 			),
 			'leg-avenue'  => array(
 				'label'   => 'Leg Avenue',
 				'time'    => '14:00',
 				'enabled' => true,
+				'skip_empty' => false,
 			),
 			'oproducts'   => array(
 				'label'   => 'Oproducts',
 				'time'    => '13:00',
 				'enabled' => true,
+				'skip_empty' => false,
 			),
 		);
 	}
@@ -640,4 +686,16 @@ class Siti_Stock_Supplier_Exports {
 
 		return isset( $defaults[ $key ] ) ? (bool) $defaults[ $key ]['enabled'] : false;
 	}
+
+	/**
+	 * Determine default skip-empty state for supplier key.
+	 *
+	 * @param string $key Supplier key.
+	 * @return bool
+	 */
+	private function is_default_skip_empty( $key ) {
+		$defaults = $this->get_default_suppliers();
+
+		return isset( $defaults[ $key ] ) ? ! empty( $defaults[ $key ]['skip_empty'] ) : false;
+	}
 }
diff --git a/siti-stock-plugin.php b/siti-stock-plugin.php
index d2ee65c..97f656b 100644
--- a/siti-stock-plugin.php
+++ b/siti-stock-plugin.php
@@ -3,7 +3,7 @@
  * Plugin Name:       Siti Stock Plugin
  * Plugin URI:        https://github.com/SitiWeb/siti-stock-plugin
  * Description:       Synchroniseert WooCommerce voorraad met het externe Siti voorraadplatform.
- * Version:           1.2.9
+ * Version:           1.3.0
  * Author: Roberto Guagliardo | SitiWeb
  * Author URI: https://sitiweb.nl/
  * Requires PHP:      8.1