Bundle Add-ons - Back In Stock Notifier for WooCommerce documentation

Restock Reminders follows up with people who were told a product is back but haven't bought it yet, while it is still in stock. You can send up to two reminders.

Set it up under Instock Notifier > Settings > Restock Reminders:

1. Tick First reminder and set First reminder delay in hours after the alert. Twenty four hours suits most stores. Go shorter for fast-moving lines.
2. Edit the subject and message. You can use {product_name}, {cart_link}, {product_price}, {stock_left} and {subscriber_firstname}.
3. Optionally tick Second reminder. Its delay is measured from the original alert, not from the first reminder, so set it comfortably later.
4. Optionally set Stop below this stock level so reminders stop once only a few units remain. This only applies to products with stock management enabled.

Each reminder is checked right before it sends. If the subscriber bought or unsubscribed, or the product sold out or fell below your floor, the reminder is skipped and not retried. The Reminders column in the subscribers list shows who has had what.

Switch on Track Sales too. Without it, nothing links an order to the notification, so people who already bought can still get a reminder.

This add-on sends the restock alert by SMS, WhatsApp or both to subscribers who gave a phone number. It uses your Twilio account.

Set it up under Instock Notifier > Settings > SMS and WhatsApp:

1. Turn on the phone field under the Visibility Settings tab. Otherwise nobody has a number to message.
2. Paste your Account SID and Auth Token from the Twilio console. Save, then use Send a test message to confirm they work. The test costs one message.
3. For SMS, set an SMS From number you own on Twilio. Or, better, paste a Messaging Service SID, which is used instead of the From number.
4. For WhatsApp, connect a WhatsApp sender in Twilio, create a content template for your restock alert and paste its WhatsApp Content SID. Meta must approve the template first. Variables 1 to 3 are filled with the product name, the price and the add to cart link.
5. Choose Channels: SMS only, WhatsApp only or WhatsApp first, SMS if that fails.
6. Optionally paste the URL shown under Delivery receipts into your Twilio Messaging Service. Delivery results then appear in the subscribers list.

Keep the Restock message under 160 characters to stay in one SMS segment. Use Country rules to limit sending to certain dialling codes. Sending is queued, so a large restock doesn't hold up your store.

This add-on adds waitlist subscribers to ActiveCampaign as contacts on the list you choose. Each contact is tagged with the product they're waiting for. You build automations against those tags.

Set it up under Instock Notifier > Settings > ActiveCampaign:

1. In ActiveCampaign, open Settings and then Developer. Copy the account URL into Account URL (no trailing slash and no /api/3) and the key into API key.
2. Save, click Fetch lists and pick a Target list.
3. Adjust Tags if you like. Placeholders such as {only_product_name} and {product_id} are filled in per subscriber.
4. Tick Enable sync. Existing subscribers are backfilled in the background.

Missing tags are created in ActiveCampaign automatically, so give the first sync a minute. Mirror unsubscribes sets the contact to unsubscribed on that list only. It doesn't delete the contact. A 403 error when fetching lists almost always means the account URL is wrong.

This add-on adds waitlist subscribers to a Brevo list, with the product stored as contact attributes. It can also let Brevo send the restock alert from one of your transactional templates.

Set it up under Instock Notifier > Settings > Brevo:

1. Create a v3 API key (it starts with xkeysib) under SMTP and API and then API keys in Brevo, and paste it into API key.
2. Save, click Fetch lists and pick a Target list.
3. Tick Enable sync.

To let Brevo send the alert, build a transactional template in Brevo and enter its numeric ID in Restock template ID. Then tick Send events and Replace the built-in email. Without the replace option, customers get two emails about the same restock. In the template, use the parameters PRODUCT_NAME, PRODUCT_URL, CART_URL, PRODUCT_PRICE, PRODUCT_IMAGE and FIRSTNAME, written in Brevo's syntax, for example {{ params.PRODUCT_NAME }}.

This add-on adds waitlist subscribers to a Constant Contact list. Constant Contact uses OAuth, so you register an app once and authorise your store. After that, tokens are refreshed automatically.

Set it up under Instock Notifier > Settings > Constant Contact:

1. Sign in to the Constant Contact developer portal and create an app of the "Authorization Code Flow" type.
2. Copy the redirect URI shown under Connection into your app's Redirect URI list. It must match exactly, including https.
3. Paste the app's API key (Constant Contact calls it the client ID) and App secret, then save.
4. Click Connect to Constant Contact, approve access and you are returned to your site.
5. Click Fetch lists, pick a Target list and tick Enable sync.

Constant Contact has no tags, so the product someone is waiting for is saved as a note on the contact. If the connection stops working, the refresh token may have been revoked or the app secret regenerated. Connect again to fix it.

This add-on adds waitlist subscribers to Klaviyo with product properties. It fires two metric events, Back In Stock Subscribed and Back In Stock Available. It can also create the matching email templates and flows for you, so Klaviyo sends the notification.

Set it up under Instock Notifier > Settings > Klaviyo:

1. Create a private API key with full access under Settings and then API keys in Klaviyo, and paste it into Private API key.
2. Save, click Fetch lists and choose a Target list.
3. Tick Enable sync and Send events.
4. Click Create templates and flows in Klaviyo. Then open them in Klaviyo, check the sender name and address, and send yourself a test. Running it again updates what exists rather than making duplicates.
5. Once the flows look right, tick Let Klaviyo send the email so the WooCommerce notification stops going out too.

In flows, you can use the event properties event.product_title, event.product_url, event.cart_url, event.product_image and event.product_price. A metric only exists in Klaviyo once it has been received. If setup reports an unknown metric, subscribe a test address with events on and run a restock first.

This add-on adds everyone who joins a waitlist to a Mailchimp audience, tagged with the product they're waiting for. Use those tags to build segments such as everyone waiting for one product.

Set it up under Instock Notifier > Settings > Mailchimp:

1. Create an API key under Account, Extras and then API keys in Mailchimp, and paste it into API key. The part after the dash is your data centre and is read automatically.
2. Save, click Fetch lists and pick an audience in Target list.
3. Adjust Tags if you want. The default writes one general tag plus one per product.
4. Tick Enable sync last. Existing subscribers are backfilled in the background.

Leave Mailchimp confirmation off if you already confirm consent on your own site, for example with Double Opt-In. Turn it on to have Mailchimp email contacts to confirm. The name goes into FNAME and LNAME, and the phone number goes into PHONE if your audience has that field. Contacts who were deleted or archived in Mailchimp can't be re-added by API. That is Mailchimp policy.

This add-on adds waitlist subscribers to a MailerLite group. The product they're waiting for is written into custom fields, so you can build segments and automations around it.

Set it up under Instock Notifier > Settings > MailerLite:

1. In MailerLite, go to Integrations and then MailerLite API, generate a token with read and write access to subscribers and groups, and paste it into API token.
2. Save, click Fetch lists and choose a group in Target list.
3. Tick Enable sync. The custom fields bis_product, bis_product_id, bis_product_sku, bis_product_url and bis_tags are created on your account on the first sync.
4. In MailerLite, build an automation triggered by "joins a group" on that group.

MailerLite keeps one contact per email address. The product fields show the most recent product someone joined a waitlist for, and bis_tags builds up the full set. Leave Subscriber status off if you already use Double Opt-In. Otherwise people are asked to confirm twice.

This add-on adds waitlist subscribers to Omnisend as tagged contacts. It can fire the custom events back_in_stock_subscribed and back_in_stock_available, so an Omnisend automation can send the alert. Omnisend doesn't use lists, so you won't see a list selector here.

Set it up under Instock Notifier > Settings > Omnisend:

1. Create an API key under Store settings, Integrations and API and then API keys in Omnisend, and paste it into API key.
2. Confirm the key works, then tick Enable sync.
3. To let Omnisend send the alert, tick Send events. In Omnisend, create an automation with a Custom event trigger and pick back_in_stock_available.
4. Inside the automation, use the event properties productName, productUrl, cartUrl, productImage and productPrice.

A custom event only appears in Omnisend's trigger list after it has been received once. Subscribe a test address and run a restock first. Only tick SMS channel if your subscribe form makes clear that giving a phone number means agreeing to texts. A contact who unsubscribed in Omnisend is never switched back to subscribed.

Track Sales links orders back to the restock email that produced them. Converted subscribers get the Purchased status, and their order and revenue appear in the subscribers list.

Set it up under Instock Notifier > Settings > Sales Attribution:

1. Make sure your back in stock email uses the {cart_link} placeholder. That is the link this add-on signs. Orders from people who used a plain {product_link} are still matched later by email address.
2. Leave Reconcile by email on to catch customers who came back later without using the link, and set the Attribution window in days.
3. Leave Revenue on to record the attributed line total.

Orders placed from a signed link are attributed immediately. Orders matched by billing email are picked up by a background job every fifteen minutes. Attributed revenue is the line total of the product the person subscribed to, not the whole order value. Waitlist Analytics and Restock Reminders both rely on this add-on.

Waitlist Analytics adds a report screen under Instock Notifier > Analytics. It needs no setup.

• Summary cards: People waiting now, Signups in period, Notified in period, Converted and Attributed revenue.
• Signups and notifications over time: a chart of signups against alerts sent.
• Where everyone stands: every waitlist entry by status.
• Unmet demand: products with people waiting, ranked by how many, with oldest signup, stock and potential value. This is the best report to start with.
• Notification performance: notified, purchased, conversion and revenue per product.

Pick a Period and click Apply. Reports are cached for fifteen minutes. Click Refresh figures to recompute now. Use Export this table to CSV under a table to download it. Conversion and revenue figures need the Track Sales add-on.

Under Instock Notifier > Settings > Waitlist Analytics, you set the Default period and Rows per table, and choose whether the top unmet demand shows on the WordPress dashboard.

Team Alerts posts waitlist signals to Slack, Discord, Microsoft Teams or any webhook, so your buying team sees demand without opening wp-admin.

Set it up under Instock Notifier > Settings > Team Alerts:

1. Create an incoming webhook. In Slack, create an Incoming Webhook for the channel. In Discord, use Channel settings, Integrations and then Webhooks. In Microsoft Teams, add an Incoming Webhook connector to the channel.
2. Paste the URL into Webhook URL and pick the matching Destination. Message formats differ, so this must be correct.
3. Save, then click Send a test message.
4. Set a Demand threshold. A product is announced when it passes this many waiting subscribers, and again at each multiple. Zero turns the alert off.
5. Optionally tick Restock summaries and Daily digest, and add a Mention on threshold alerts such as <!here> in Slack or @here in Discord.

Alerts carry product names, counts and potential values only. No email addresses or phone numbers are sent. The webhook URL is encrypted at rest and shown masked. The URL must be HTTPS.

Waitlist Priority decides who hears first when stock is limited and how many people are told at a time.

Set it up under Instock Notifier > Settings > Waitlist Priority:

1. Choose Notify in this order: First come, first served, Highest lifetime spend first, Priority customer roles first, then signup order or Registered customers first, then guests.
2. For role ordering, list role slugs in Priority roles, highest first, for example vip_customer, wholesale.
3. Tick Wave release if your restocks are often smaller than your waitlists. Set People per unit of stock, Gap between waves in minutes and Maximum waves.
4. Optionally set Stop at this stock level to hold a few units back.

Stock is re-read before every wave. When the product sells out, the remaining waves are cancelled and those subscribers stay on the waitlist for the next restock. Wave sizing needs a stock number. For products that don't manage stock, the add-on paces sending with a fixed batch instead. Scores for spend ordering are only computed for registered customers.

Double Opt-In makes new subscribers confirm by email before their waitlist entry becomes active. Until they click the link, the entry sits at Awaiting confirmation and doesn't count towards your subscriber numbers.

Set it up under Instock Notifier > Settings > Double Opt-In:

1. Tick Require confirmation.
2. Make sure Confirmation message contains {doubleoptin_verify_link}. Otherwise nobody can confirm. You can also use {product_name}, {subscriber_name} and {shopname}.
3. Adjust the messages shoppers see after signing up, when a confirmation is already pending, after confirming and for an expired link.
4. Set Delete unconfirmed entries after in days. Older unconfirmed entries are deleted automatically.

Unconfirmed entries appear under the Awaiting confirmation filter in the subscribers list, where you can resend the email row by row. People already on a waitlist when you switch this on stay active. With Consent evidence on, the confirmation time, the page the form was on and a salted hash of the IP address are stored. The raw IP is never kept.

Unsubscribe adds one-click unsubscribe links to your notifications, a Subscribed List tab in My Account and the List-Unsubscribe headers that Gmail and Yahoo read.

Set it up under Instock Notifier > Settings > Unsubscribe:

1. Choose the Unsubscribe page. One is created for you the first time the add-on is switched on. The page must contain the [cwginstocknotifier_unsubscribe] shortcode.
2. Add {cwginstock_unsubscribe} to your subscription and back in stock email templates, usually in an unsubscribe link at the foot of the message. {cwginstock_unsubscribe_all} removes the recipient from every waitlist.
3. Leave Mailbox unsubscribe button on. Turning it off makes it more likely your notifications land in spam.
4. Adjust the confirmation, already unsubscribed and invalid link messages. The confirmation message supports {email_id} and {product_name}.
5. If you change My Account endpoint, save your permalinks once afterwards.

You can also set the My Account tab label, the Subscribed List heading and link text, and whether to show thumbnails, hide the SKU or show how many people are waiting for each product.

Edit Subscribers lets you correct any waitlist entry by hand and add new ones from the admin. Use it to fix a mistyped address, move someone to a different variation or add a customer who asked by phone.

1. Go to Instock Notifier > All Subscribers, hover a row and click Edit. Use Add New Subscriber to create an entry.
2. You can change the email, name, phone, product, quantity or status. The product field searches your catalogue, including variations.
3. Setting someone back to Subscribed makes them eligible for the next restock notification.

Edits are silent. No email is sent when you edit a row. Only users who can manage WooCommerce can edit subscribers.

Under Instock Notifier > Settings > Editing Subscribers, Change history records who changed what on each subscriber. The last few entries appear under the edit form. Leave Duplicates off unless you have a specific reason, because duplicates mean duplicate notification emails.

Never Restock is for products that are gone for good. You map a discontinued product to one or more replacements. When a replacement comes into stock, everyone on the discontinued product's waitlist is emailed about it.

1. Under Instock Notifier > Settings > Never Restock, tick Enable and save. A Never Restock item appears in the Instock Notifier menu.
2. There, add a rule: pick the discontinued product, then one or more replacements.
3. Back on the settings tab, write the Email subject and Email message. Use {replacement_product}, {replacement_product_link}, {replacement_product_add_to_cart} and {replacement_product_price} for the replacement. Use {product_name} for the original, plus {subscriber_name} and {shopname}.
4. If one replacement is named by several rules, Rule priority decides which applies. Apply every matching rule can mean several emails to the same person.

Each subscriber is told once per replacement and then marked Notified. Stock is re-read before each batch. If the replacement has sold out again, nothing is sent. Lower Emails per batch if your mail provider rate limits you.

Export CSV downloads your subscriber list as a spreadsheet file.

1. Go to Instock Notifier > All Subscribers.
2. Click Export CSV above the list.
3. Tick the columns you want and optionally narrow the export by status, product or date. The file downloads straight away.

The file is UTF-8 with a byte order mark, so Excel shows accented names correctly. Rows are fetched in batches, so large waitlists don't run out of memory. Values that begin with =, +, - or @ get an apostrophe in front, so the spreadsheet treats them as text.

Under Instock Notifier > Settings > CSV Export, set how many Category columns the file gets and the Delimiter. Choose Semicolon for regional Excel builds that use a comma as the decimal separator. Only users who can manage WooCommerce can export. The file may contain personal data, so handle it with care.

Import CSV brings waitlist subscribers in from another platform or from a backup. The importer is under Instock Notifier > Import CSV.

1. Export your existing waitlist to CSV. The first row must be a header row. Download a sample file shows the expected layout.
2. On Import subscribers from CSV, choose the file and click Upload and read columns. The maximum size is 20 MB. Split larger lists into several files.
3. Map your columns. You need Email plus either Product ID or Product SKU. Everything else is optional. SKU is usually the right choice when the data came from another store.
4. Review the preview of the first rows, then start the import. It runs in chunks with a progress bar and can be closed and resumed.

Rows whose email and product already exist are skipped as duplicates. Import sessions last an hour. Dates are best in YYYY-MM-DD or YYYY-MM-DD HH:MM:SS format. If Ban Emails is on, blocked addresses are skipped.

Under Instock Notifier > Settings > CSV Import, choose the status for rows without a status column. Leave Run integrations on import off unless you want every imported row pushed to your marketing platform. Leave Unknown products on to skip rows whose product isn't in your store.

Custom CSS restyles the subscribe form, button and popup without editing theme files. Its settings create a small stylesheet that loads after your theme. Leave a field empty to keep your theme's look.

Set it up under Instock Notifier > Settings > Subscribe Form Styling:

1. First pick a Subscribe Form Design and popup design on the Frontend Form tab. This tab recolours whichever design you chose.
2. Set widths, font sizes, corner radii and shadow, and use the Select Color pickers for headings, buttons, the form panel, inputs, the popup, messages and the guest notice. Save.
3. View an out of stock product to check the result. If you use a page cache, purge it once after saving.
4. For anything the fields don't cover, use the Custom CSS box at the bottom. It is output after every other rule, so it always wins. Tags and scripts are stripped on save.

The mobile width applies below 768px as a media query, so it works with full page caching. Useful classes: the wrapper is .cwginstock-subscribe-form, the panel .cwginstock-panel-primary, the heading .cwginstock-panel-heading, the body .cwginstock-panel-body, the button .cwgstock_button and the guest notice .cwg-guest-message.

Demand Signals shows shoppers how many people are already waiting for an out of stock product. It can also tell a new subscriber their place in the queue. Only real counts are shown.

Set it up under Instock Notifier > Settings > Demand Signals:

1. Set Minimum before showing. Below this number nothing is shown, so thin waitlists stay private.
2. Choose Where to show it and reword the Message. Use {count} for the number.
3. Optionally tick Queue position and edit the Queue position message. Use {position} for their place.
4. Optionally tick Shop and category pages to add a short badge on product listings, and pick an Appearance.

The Showing right now line tells you how many products are at or above your minimum. On variable products, each variation has its own waitlist and count, and the notice follows the variation the shopper selects. To place the count anywhere else, use the [bis_demand_count] shortcode. Choose Only where I place the shortcode if you only want it there.

The Polylang add-on remembers the language each person subscribed in. It treats all translations of a product as one waitlist and sends each notification in the subscriber's own language.

1. Switch it on under Instock Notifier > Add-ons.
2. Go to Languages > String translations and filter by the group "Back In Stock Notifier". Translate the email subject, heading and body for each language you sell in.
3. Check the add-on's translation status table. A cross means that language gets the original text.
4. Leave "Treat translations as one waitlist" on unless each translation of a product really has its own stock.
5. Test by subscribing on a translated product page, then restocking.

If the strings don't appear under String translations, open WooCommerce > Settings > Emails once, then look again. Edit the original email text on the Back In Stock emails there. A fallback language code covers subscribers with no recorded language, such as imported rows. Don't run this add-on alongside the WPML add-on.

The TranslatePress add-on remembers the language each person was browsing in when they subscribed. Their restock notification is sent in that language.

TranslatePress translates rendered pages, and an email is never rendered as a page. So you write the email text for each language in this add-on's settings instead of the TranslatePress editor.

1. Switch it on under Instock Notifier > Add-ons.
2. Write the email subject, heading and body for each language you have set up in TranslatePress.
3. Check the translation status table. A cross means that language gets the original text rather than a blank email.
4. Test by switching the shop to another language, subscribing on an out of stock product, then restocking it.

TranslatePress doesn't duplicate products, so each product already has one waitlist and no shared waitlist setting is needed. Subscribers who joined before you switched the add-on on have no recorded language. Set a fallback language code for them. If only half the email is translated, check that the language code matches a locale WordPress has installed, for example de_DE rather than de.

The Weglot add-on remembers the language each person was browsing in when they subscribed. Their restock notification is sent in that language.

Weglot translates pages as they are shown to visitors. Emails never pass through it, so without this add-on every notification goes out in your original language.

1. Switch it on under Instock Notifier > Add-ons.
2. Write the email subject, heading and body for each destination language set up in Weglot.
3. Install the WordPress language pack for each language under Settings > General, so the email template around your text is translated too.
4. Check the translation status table. A cross means that language gets the original text.
5. Test by switching the shop to another language, subscribing on an out of stock product, then restocking it.

The email text you enter is stored on your own site and never sent to Weglot, so notifications don't count against your word quota. A fallback language code covers subscribers with no recorded language.

The WPML add-on remembers the language each person subscribed in. It treats all translations of a product as one waitlist and sends every notification in the subscriber's own language.

1. Switch it on under Instock Notifier > Add-ons.
2. Go to WPML > String Translation and filter by the domain "Back In Stock Notifier". Translate the email subject, heading and body for each language you sell in.
3. Check the add-on's translation status table. A cross means that language gets the original text.
4. Leave "Treat translations as one waitlist" on unless each translation of a product really has its own stock. Without it, a restock on the original product doesn't reach people who signed up on a translation.
5. Test by subscribing on a translated product page, then restocking. The email should arrive fully translated, with a link to the translated product.

The original email text is under WooCommerce > Settings > Emails, on the Back In Stock emails. Editing it creates a new string, so re-check the status table afterwards. Don't run this add-on alongside the Polylang add-on.

Ban Emails keeps junk addresses off your waitlist. Rules run before a subscription is stored, so a blocked address never appears in your subscriber list.

Set it up under Instock Notifier > Settings > Blocked Emails:

1. Leave Disposable providers on. It blocks a bundled list of throwaway mail domains that updates with the add-on. Click Show the full list under Blocked providers to see it.
2. Optionally tick Role accounts to block shared mailboxes such as info@, admin@ and sales@.
3. Optionally tick Deliverability check to reject domains with no mail server. This catches typos such as gmial.com.
4. Add your own Blocked domains and Blocked addresses, one per line or comma separated. Domains accept wildcards, for example *.example.com.
5. Put genuine customers in Always allow. It is checked first and overrides every other rule.
6. Set the Message shown when blocked. Keep it vague.

Rules only apply when someone subscribes. Existing entries are left alone. With Logging on, blocked attempts are recorded in the plugin log with the address partly masked.