What Is a Cart Abandonment Email? Benchmarks and How They Work

A cart abandonment email is an automated message you send to a shopper who added items to their cart but left before paying. It reminds them what they left behind and gives them a reason to come back and finish. Done well, it quietly recovers a meaningful slice of sales you would otherwise lose for good.

Most stores set one up once and forget about it. That is a mistake, because the details decide whether it earns a few dollars or a lot. Here is how they work and what the data says.

What exactly counts as a cart abandonment email?

It is an automated email triggered by a specific event: a shopper put something in the cart and then left without checking out. The store has to already know the person's email address, either because they were logged in, bought before, or typed their address into the checkout before bailing. That last point matters. You cannot email an anonymous visitor, so a cart email only reaches a subset of the people who abandon.

It is different from a browse abandonment email, which fires when someone views products but never adds anything. Cart abandoners have shown stronger intent, which is why these emails tend to convert better than almost any other automated message.

How well do cart abandonment emails actually work?

Better than most people expect. Klaviyo analyzed 143,000 abandoned cart flows and found an average open rate of 50.5%, a click rate of 6.25%, and a placed-order rate of 3.33%, generating $3.65 in revenue per recipient. That revenue-per-recipient figure was the highest of any automated flow they measured.

The top 10% of senders did much better: a 65.34% open rate, a 13.33% click rate, a 7.69% conversion rate, and $28.89 per recipient. The gap between average and best is mostly timing, copy, and how relevant the reminder feels.

When should you send the first email?

While intent is still warm. Klaviyo's guidance is a simple reminder two to four hours after the cart is abandoned, a follow-up around 24 hours later, and a final message near 48 hours. Plenty of stores send the first email within an hour, betting that the shopper got distracted rather than changed their mind.

There is no single right answer. A $20 impulse buy and a $2,000 considered purchase deserve different cadences. Test a couple of timings against your own data rather than copying a template.

How many emails should the series have?

More than one. A series consistently out-earns a single send. Omnisend reported that three-email cart sequences drove $24.9 million in their dataset compared to $3.8 million for single-email campaigns. In the same data, abandoned cart, welcome, and browse abandonment emails together accounted for 87% of all automated orders.

The usual shape is three: a friendly reminder, a follow-up that addresses a likely objection, and a last call. Adding a discount to the final email can lift conversions, but use it carefully. Train shoppers to expect a coupon every time and you teach them to abandon on purpose.

What should a cart abandonment email include?

Keep it short and obvious. The strongest ones share a few things:

• The actual items left behind, with images, so the email feels personal rather than generic.
• One clear button that drops the shopper straight back into their cart.
• A plain, honest subject line. "You left something behind" beats anything clever.
• A trust signal or two, like free returns or a security note, since doubt is a common reason people stall.

Resist the urge to add three offers, a newsletter signup, and a social feed. Every extra choice is a reason to close the tab.

Why do shoppers abandon carts in the first place?

This is the question that matters most, because the email only treats the symptom. The average documented cart abandonment rate is 70.22%, based on 50 studies compiled by the Baymard Institute. Among shoppers who were genuinely considering a purchase, the leading reasons were: extra costs like shipping and fees deemed too high (39%), delivery that was too slow (21%), distrust over entering card details (19%), being forced to create an account (19%), and a checkout that felt too long or complicated (18%).

Look at that list. Almost none of those problems are fixable with an email. They are checkout design problems. A reminder email recovers a few percent of lost carts; fixing the friction that caused the abandonment recovers far more, and it works on every visitor, not just the ones whose address you captured.

The hard part is that you usually cannot see where your own checkout breaks, because you know it too well. That is the gap CanaryUsers closes. It runs a flock of AI users through your live checkout and reports exactly where they hesitate or quit, each with a concrete fix, no traffic or recruiting needed. If your cart abandonment emails are doing a lot of heavy lifting, that is a sign the checkout in front of them is leaking. Run a free scan to see where.

If you want the full picture on the metric itself, our guide to checkout abandonment rate breaks down how to measure and benchmark it.

Do cart abandonment emails require consent?

You can only email people whose address you legitimately captured, and you should honor marketing consent and include an unsubscribe link. A cart reminder sits in a gray zone between transactional and marketing, so the safe move is to treat it as marketing: send only to shoppers who opted in or knowingly handed over their email, and make opting out easy. Rules vary by region, so check what applies to your customers.

Are cart abandonment emails worth it for a small store?

Yes, and they are one of the best returns on an afternoon of setup. Klaviyo's data showed relatively small variance between average and top performers, which means even a basic three-email flow lands near the benchmark. You do not need a big list or a fancy tool. You need the emails turned on, sensible timing, and a checkout worth returning to. Pair the recovery emails with steady work on conversion, like the tactics in how to increase conversion rate, and the same traffic earns more.