diff --git a/plugins/woocommerce/changelog/patch-fix-mobile-messaging b/plugins/woocommerce/changelog/patch-fix-mobile-messaging
new file mode 100644
index 00000000000..20e93ff530c
--- /dev/null
+++ b/plugins/woocommerce/changelog/patch-fix-mobile-messaging
@@ -0,0 +1,3 @@
+Significance: patch
+Type: fix
+Comment: This fixes bug described in https://github.com/woocommerce/woocommerce/issues/35016
diff --git a/plugins/woocommerce/includes/emails/class-wc-email-new-order.php b/plugins/woocommerce/includes/emails/class-wc-email-new-order.php
index 86254c02df3..e357c11ff73 100644
--- a/plugins/woocommerce/includes/emails/class-wc-email-new-order.php
+++ b/plugins/woocommerce/includes/emails/class-wc-email-new-order.php
@@ -227,9 +227,11 @@ if ( ! class_exists( 'WC_Email_New_Order' ) ) :
 
 		/**
 		 * Add mobile messaging.
+		 *
+		 * @param WC_Email $email that called for mobile messaging. May not contain a WC_Email for legacy reasons.
 		 */
-		public function mobile_messaging() {
-			if ( null !== $this->object ) {
+		public function mobile_messaging( $email ) {
+			if ( $email instanceof WC_Email_New_Order && null !== $this->object ) {
 				$domain = wp_parse_url( home_url(), PHP_URL_HOST );
 				wc_get_template(
 					'emails/email-mobile-messaging.php',