Abandoned Carts: A CASL-Compliant Email Sequence

Archive note. This article describes the situation as it stood when it was published. The rules, tools and features it mentions may have changed since. Check the current information with the official source before acting.

Abandoned carts come with consent you already hold: adding items to a cart on your site starts an existing business relationship under CASL, with implied consent to email for a limited time. The harder part is the sequence itself: when the reminders go out, what each one says, when an incentive earns its place, and when to stop sending.

Abandoned carts and CASL: what consent you already have

Adding items to a cart on your site starts an existing business relationship under CASL, which is what gives you implied consent to email about that cart for a limited time. That consent is not permanent, and how long it lasts depends on the type of interaction, so treat it as a window that closes rather than a standing permission. I keep the legal detail out of this article on purpose. I have a separate post on CASL follow-up emails that walks through the consent periods and the express-consent question, and that is the place to confirm your own case before you send.

What matters for the sequence is that the messages stay tied to the cart itself. An abandoned cart email is still a commercial electronic message, so every send needs your business name, a mailing address, and a working unsubscribe link, and it should talk about the cart the person left rather than general promotions. Keep it relevant to what the shopper actually did and you are on solid ground.

Cart reminder timing: the first email after a cart is left behind

Send the first reminder within about an hour of the cart being left behind, while the product is still fresh in the shopper's mind and the interest is clearly recent. From what I have seen with clients across Greater Montréal, waiting longer means the shopper has bought elsewhere or forgotten why they clicked add to cart in the first place.

Acting on recent, clear interest also keeps you comfortable under CASL, because you are responding to something the person just did rather than reaching out cold. Set the trigger inside your store's automation so nothing depends on someone remembering to send it by hand. These are manually configured rules you build once, not a person watching a dashboard.

Email content: the first message versus a second follow-up

The first message stays simple and the second does more work: email one is a plain reminder of the cart, while a follow-up can answer the objection that may be holding the purchase back. I keep the first one short because it exists to jog a memory, not to sell again.

The second email is where I address the thing that usually stalls a sale, like shipping cost or a return policy. If the shopper hesitated over delivery, say what shipping actually costs and how long it takes. If it was uncertainty about sending an item back, state the return terms plainly. Answering one real doubt does more for the sale than another round of product photos.

Product images, price and a single link back to checkout

Product images, price and a single checkout link are all the first email needs, pulled straight from the cart data through merge fields. The photo brings the item back to mind without guesswork, and one clear button, worded something like "Return to cart," gives the shopper exactly one thing to do.

Keep the layout to one product, one price, one link. Leave out extra links to your homepage or blog, because every additional click is another chance for the shopper to wander off. I build the template once in my email platform and let the merge fields fill it for each cart automatically.

Incentives: when they belong in the sequence and when they erode margin

Incentives belong late in the sequence, not at the start, because a discount in every abandoned cart email trains regular shoppers to abandon on purpose and wait for the offer. That habit costs you margin on sales you would have made anyway.

Here is how I handle it. No discount in email one, which is only a reminder. If the shopper has not returned by email two, I test a smaller incentive such as free shipping instead of a percentage off, after checking that the shipping cost is less than the margin I would give away with a straight discount. I save any real price cut for a later email and only for higher-value carts, where losing the sale outweighs losing the margin. Watch which emails actually recover carts. If the plain reminder does most of the work, you may not need an incentive at all.

Sequence exit: stopping once the cart converts or consent runs out

Stop every email tied to a cart the moment it converts or the moment consent ends, whichever comes first, so no one is offered a discount for something they already bought. I set the system to check order status before each send, which pulls a completed purchase out of the sequence right away.

Consent ends the sequence just as firmly. If someone withdraws consent or their implied-consent window closes, I stop sending, add them to the suppression list, and note the date so the record is clean. This is where an abandoned cart sequence differs from a longer nurturing sequence: nurturing keeps a contact warm over weeks, while a cart sequence is tied to one action and should end when that action resolves.

Trigger	Action
Purchase completed	Stop the sequence for that cart
Consent withdrawn	Stop immediately, add to suppression list
Consent window closed	Stop sending

Abandoned-cart sequence you can set up this week

You can build this sequence yourself this week with standard tools and no developer, using three emails timed and triggered by your store's own rules. Klaviyo, Mailchimp, or Shopify's built-in abandoned checkout email will all handle it.

Email one goes out about an hour after the cart sits idle: show the product, give one link back to checkout, nothing else. Email two follows around a day later and answers a common objection, such as shipping cost or the return policy. Email three arrives a day after that with a small, genuine incentive, but only if your margins allow one. Every message needs an unsubscribe link and your business address, and CASL requires the unsubscribe link to keep working for at least 60 days after you send, so do not point it at a page you plan to take down.

When I set up ecommerce marketing for a store, this three-email flow is one of the first things I build. Set it up once, test it against your own cart, and it keeps working in the background.