Ticket #9329: 9329.patch

src/bp-core/bp-core-functions.php

@@ -4510 +4510 @@
                 'groups-membership-request-rejected-by-admin' => $groups_membership_request_rejected_by_admin,
         );
 
+        /**
+         * Filters the email type schema, allowing anyone to add/update email type metadata.
+         *
+         * @since 15.0.0
+         *
+         * @param array $types The array of email type metadata.
+         */
+        $types = apply_filters( 'bp_email_get_type_schema', $types );
+
         if ( $field !== 'all' ) {
                 return wp_list_pluck( $types, $field );
         } else {