Back-in-Stock Alerts

They asked to be told, which is the whole advantage

An item sells out and interested buyers drift away. When it returns, the people who wanted it have moved on and there is no way to reach them except a general announcement most recipients did not ask for.

A back-in-stock alert is a marketing message under Meta’s rules, even though the customer asked for it. What makes it work is that consent is specific and recent — they asked about this item — so it is one of the few marketing messages people are genuinely pleased to receive.

Which kind of message this is

Marketing. The request does not change the category. It does change the reception: an alert someone asked for is far less likely to be blocked or reported than a general promotion, which is what protects your quality rating.

How to set it up

1
Capture the request explicitly
A form or a reply saying "tell me when this is back". Tag the contact with the item — that tag IS the consent record and the audience in one.
2
Keep the tag specific
Per item, not "interested in stock". Someone who asked about one product did not ask about your catalogue.
3
Send to that tag when it returns
An approved marketing template to exactly the people who asked, and nobody else.
4
Remove the tag after sending
The request has been fulfilled. Leaving it on turns a one-time consent into a standing list they never agreed to.

What goes wrong

— Reusing the list. They consented to one alert about one item. Messaging that group again about something else is the moment it becomes spam.
— Waiting so long the request is stale. A month later they have bought it elsewhere and the message reads as an intrusion.
— Submitting it as a utility template. There is no transaction yet — that is exactly what makes it marketing.
— Sending to everyone who ever viewed the item rather than those who asked. Viewing is not consent, and this distinction is the whole reason the message is welcome.

Questions

They asked to be notified — is it still marketing?

Yes. Meta categorises by what the message does, and this promotes a purchase that has not happened. The consent does not change the category; it changes whether people are glad to get it.

Does PingPlug know when stock returns?

No. Nothing here tracks inventory — the product catalog holds prices, not quantities. Your system knows, and can trigger the send through a webhook, or you send the broadcast to the tag yourself.

How do I record that they consented?

The tag is the record: applied when they asked, naming the item. Keep it specific and remove it once the alert is sent, so a one-time request never quietly becomes a mailing list.

Try it on your own numbers

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