A back-in-stock email should name the product, say that it is available again, and link to the product page. Skip a discount, a ship date, and a channel you do not actually send. If you use SK Back In Stock, the catalog's template can insert product name, product URL, new price, and old price. You still write the sentences around those inserts.
The copy below is a structure you can type. It is not a promise that every app prints the size automatically. Send a test to yourself before a real restock goes out.
Subject line
The subject has one job: the person who asked should recognize the item and understand why you are writing. Use the product name and the fact that it is back. "The wool coat is back" is enough. "FINAL HOURS" is not, because a restock is not a countdown unless you have a real end time you intend to honor.
People who joined a waitlist expect a stock note, not a newsletter. If the product-name insert is the only moving part, put it in the subject.
- Useful: "The wool coat is back in stock."
- Useful: "You asked us to email you: the wool coat is available."
- Avoid: fake scarcity, a percent off, or "we texted you" when the message is email.
If the product name alone is ambiguous, do not type one size into a template that also sends for other sizes. SK's documented inserts do not include a variant-title field. The queue is still per variant, but the visible title may be the product title. Test two variants before you freeze the subject.
First sentence
Say what happened, in the first sentence. The variant they waited on is available again. Do not open with the brand story, a seasonal greeting, or three lines of thanks. The reader is scanning to see whether this is the item.
A clear first sentence: "The wool coat you asked about is available again." Follow with the option if you can say it truthfully for that send: "This note is for the variant you signed up for." That second sentence stays accurate even when the template cannot print the size, because the app only queues people who joined that variant. Then tell them what to do: open the product page and buy it there if they still want it.
Do not say "We saved one for you" unless you actually reserved a unit. An email waitlist does not hold inventory. The first person to check out gets the unit. If you only received two pieces and twenty people are waiting, say it is back, not that it is theirs.
The link and the price
The link should be the product URL, in the message body, as a normal address the reader can see. In SK Back In Stock the product URL is a template placeholder, and values are escaped and restricted to safe URL schemes before they are inserted. Use that placeholder rather than pasting a campaign URL you will forget to update.
New price and old price are the other documented inserts. Use them when both numbers are the real current and previous prices. If the price did not change, do not invent an old price to make the email look like a sale. If the price went up, the honest email shows the new price or simply sends people to the page, where the live price is visible. A placeholder full of blanks looks broken. Hide the price sentence when you have nothing true to put in it.
There is no discount-code placeholder in the catalog. Do not bolt a code onto the email unless that code exists in Shopify, works on this product, and you are willing to support it. A restock is not required to be a promotion. Many shoppers only wanted the size.
What not to promise
Leave these out unless a different system, not this template, is really doing them.
- A delivery date or a "back Friday" line. The stock webhook knows quantity, not the carrier appointment.
- A held unit, a deposit, or a preorder. The signup does not create an order.
- An SMS or a WhatsApp follow-up. This app's send is email.
- A Klaviyo flow. This app does not list a Klaviyo sync. If the mail must be designed in Klaviyo, this template is the wrong place to pretend.
- An arrival time for the email itself. The catalog queues the send and retries failures up to five times. It does not publish a minute limit.
"You abandoned this" is the wrong story. They could not buy it. One short note and one link is the tone. The catalog lets you send a test to yourself. Use it after every template edit.
A short example
This example is wording, not a merge-tag specification. Replace the bracketed parts with your template's real inserts. Delete any line you cannot fill with a true value.
Subject: The wool coat is back in stock
The wool coat is available again. You asked to be emailed when this item returned. Open the product page to see the current price and to buy it if you still want it: [product URL].
If your test shows the size in the product name, you can let that name carry the option. If it does not, and every send from this template is truly for one fixed variant, you may name that variant in the body. The moment the same template serves more than one size or color, remove the hardcoded option and rely on wording that stays true for every send, plus the link.
A second example, when the price actually changed and both placeholders resolve:
The wool coat is available again at [new price]. It was previously [old price]. The product page has the current details: [product URL].
Do not send the price version with empty tokens. Read the test first. A further restock, after the variant is already above your threshold, does not by itself send another email.
Questions about restock copy
Should I add a discount code?
Only if you have already created the code and you want this restock to be a promotion. The catalog does not add one for you. Most waitlist emails only need the product and the link.
How fast should the mail go out?
The catalog does not state a service level. The inventory event queues a job, and a worker sends it. Write the email so it is still true if it arrives later than you hoped, and do not promise "within five minutes."
Can I use the same email for a low-stock warning?
No. Low stock is the threshold crossed downward, and it is a different alert. The back-in-stock wording says the item is available again. That sentence is false on a low-stock warning.
Write the note so a shopper can name the product, see that it is back, and open the page. If you want those inserts filled by the app, read SK Back In Stock and send yourself the test before a variant actually returns.