A customer pays and then hears nothing, because the goods are late and no tracking email can go out yet. This plugin notices the silence. When a paid order still has not shipped after a set number of days, it emails the customer, follows up once, and then asks your staff to get in touch. As soon as the order ships, it stops.

Free, GPL-2.0-or-later. Get it from the WordPress.org plugin directory.

The rule

Every morning the plugin looks at paid orders that are still waiting to ship. If an order has no tracking 12 days after payment, the customer gets a first notice. Seven days later comes a second one, and seven days after that your staff get an alert to contact the customer. You set all three numbers.

What it does

Reads the tracking from Advanced Shipment Tracking, WooCommerce Shipment Tracking or Shiptastic, from an order meta key you name, or from the order status.
Leaves your order history alone. Only orders paid after you first activate it count, unless you choose an earlier start date.
Shows a preview of what the next check would send before anything is sent.
Sends at most one email per order per day, adds an order note for each one, and writes a log line per order.
Uses real WooCommerce emails, so you edit their text under WooCommerce, Settings, Emails.
Pauses and says so if the tracking plugin it relies on is switched off, instead of emailing every open order.

What it does not do

The default emails promise no delivery date. The plugin makes no external requests and needs no account. Everything on this page is in the free plugin. It is a service tool, not a legal one.

Business days and holidays, lead times per product or category, more notices with an apology coupon, Klaviyo and webhook events and a weekly report are in the paid add-on, Opuswerk Delivery Delay Notices Pro.

Für deutschsprachige Shops

Eine Lieferverzögerung ist der Moment, in dem Kunden am schnellsten das Vertrauen verlieren. Das Plugin schreibt ihnen rechtzeitig, bevor sie nachfragen müssen, und erinnert danach Ihr Team, sich persönlich zu melden. Eine deutsche Übersetzung liegt in der Du- und der Sie-Form vor; WordPress lädt sie, sobald sie auf translate.wordpress.org freigegeben ist.

Screenshots

The settings tab: the rule in one sentence, the status of the daily check and the steps.

Which orders count: the shipped signal, waiting statuses, excluded shipping methods and start date.

The preview: orders due now and orders waiting for a later step.

The first notice in the WooCommerce email settings.

An order note written for each email sent.

Requirements

WordPress: 6.5 or later, tested up to 7.1
WooCommerce: 8.0 or later, tested up to 11.2, with HPOS
PHP: 7.4 or later