A cart abandonment SMS is an automated text sent to a shopper who added items and left before paying. Send the first one 15 to 60 minutes after abandonment, make it a plain reminder with the product and a direct checkout link (no discount yet), and expect it to earn somewhere between $0.74 and $4.48 per message depending on how you count. That spread is the whole game: the channel is cheap and fast, but your real number depends on timing, copy, and whether you ever have to give a code away.
Most stores get this wrong in the same way. They fire one generic text, wait a day, then staple a 10% coupon to it. That trains customers to abandon on purpose and quietly caps your margin. The better flow treats the text as a nudge, not a bribe.
What is the shopping cart abandonment rate?
The shopping cart abandonment rate is the share of shoppers who add at least one item to a cart but leave without completing checkout. The documented average sits at 70.22% across Baymard’s meta-analysis of 50 studies—roughly 7 in 10 filled carts. Live trackers that include browsing sessions run higher, into the high 70s.
That number is why recovery matters. A store doing $100k a month in completed orders is losing a multiple of that to carts it already earned the demand for. Unlike paid acquisition or a group-buying push that brings in new buyers, cart recovery monetizes intent you’ve already paid for. The cheapest revenue you will find this quarter is the order someone already tried to place.
When should a cart abandonment SMS send?
Send the first text inside the first hour—15 to 60 minutes after abandonment is where intent is highest. Google’s own AI Overview for this query and multiple vendor playbooks converge on 15–30 minutes for message one. After that, US carrier guidance is the hard constraint, not a preference:
US carrier guidelines allow one message per abandonment event, sent within 48 hours of it.
So the SMS is a single, well-timed touch. The multi-step sequence lives in email. A clean abandoned cart email flow runs three sends—about 1 hour, 24 hours, and 72 hours—and the text slots in front of it as the fast first knock. Opted-in shoppers get up to four touches total (one SMS, three emails); everyone else gets the email flow only. That is your whole SMS abandonment flow: one text, then let email carry the follow-ups.
What should a cart abandonment SMS say?
Lead with identity, the product, and the link—then stop. The first text should not contain a discount. Here is the structure that works:
- Brand name first so it’s not mistaken for spam, then the shopper’s name.
- A specific reference to what they left (“your cart,” or the product if you can).
- A direct checkout link that reopens the cart, not the homepage.
- A STOP opt-out in the message, every time.
Example: “[Brand] Hi Sam—you left the merino crew in your cart. Finish up here: [link]. Reply STOP to opt out.” Save the incentive for later, and only if the first nudge fails. A no-discount reminder protects margin and avoids training customers to wait for a code. When you do add an offer on a later email, make it the smallest one that moves the needle—often free shipping beats a percentage off.
SMS vs email cart recovery: the revenue-per-send math
Here’s the comparison most vendor pages skip, because they only quote their own open rates. The decision isn’t open rate—it’s net revenue after message cost and any discount given.
| Metric | Abandoned-cart email | Abandoned-cart SMS |
|---|---|---|
| Typical send delay | ~1 hr (then 24 hr, 72 hr) | 15–60 min |
| Touches per abandonment | 3 emails | 1 text (carrier cap) |
| Open rate | ~50% | ~90–98% |
| Click rate (avg) | 6% | 10.3% |
| Conversion per send | 1.49% | 0.77% |
| Revenue per recipient (avg) | $6.77 | $4.48 |
| Cost per send | ~$0 | ~$0.015–$0.05 / segment |
| Net per 1,000 messages* | ~$6,770 | ~$4,450 |
| Consent + quiet hours | implied opt-in | express written opt-in; 8am–9pm local |
*Illustrative: benchmark revenue per recipient minus send cost, before any discount given.
Two numbers look like they disagree, and the disagreement is the point. By Klaviyo’s 2026 cart benchmarks reported via Geysera, SMS gets more clicks (10.3% vs 6%). By Omnisend’s 2025 automation data, email converts better per send (1.49% vs 0.77%) and earns more per message. Both are true: SMS wins attention, email wins depth and reaches every abandoner, not just opted-in ones. For cart SMS specifically, Postscript’s 2026 data puts earnings at $3.52–$10.95 per message at the 25th–75th percentile—far above the blended $0.74. The gap is almost entirely timing and list quality.
The practical read: run both. SMS as the 60-minute knock, email as the follow-through. Judge the SMS on net revenue per send after the cost of the text and any code you gave, not on the 98% open rate that every platform loves to quote.
What is the average cart abandonment rate on Shopify?
Shopify stores track close to the global 70% average, with mobile-heavy stores running higher because small screens and clumsy checkout fields cost conversions. Your cart abandonment rate benchmark is worth segmenting: a 78% rate driven by cold paid-social traffic is a different problem than a 78% rate on returning email subscribers. SMS recovery earns the most on the second group—warm, opted-in, high-intent—which is also exactly the group carrier rules let you text.
Is a cart abandonment SMS legal? Consent and quiet hours
Only text shoppers who gave express written opt-in for marketing messages—a checked box or a submitted number tied to clear SMS consent language, never a purchase alone. Abandoned cart texts are marketing, not transactional, so the full ruleset applies. Your SMS compliance checklist for US ecommerce:
- Express written consent before the first marketing text; keep the record.
- Quiet hours: send only 8am–9pm in the recipient’s local time. Florida’s FTSA is stricter at 8am–8pm.
- Clear sender ID and a STOP opt-out in every message.
- 10DLC registration of your number, which typically takes three to five weeks—start before BFCM, not during it.
Get consent and quiet hours right and the cart abandonment SMS is one of the highest-return automations you can run. Get them wrong and a single complaint-heavy send can get your number throttled or blocked by carriers, taking the whole program down with it. For the broader picture on what texting returns across your store, see our SMS marketing ROI benchmarks.
Frequently Asked Questions
How many emails should be in an abandoned cart flow?
Three is the proven default: one around 1 hour after abandonment, a second at 24 hours, and a third at 48–72 hours. Pair that email flow with a single cart abandonment SMS sent 15–60 minutes out, since US carrier guidance caps you at one text per abandonment event.
Are abandoned cart emails transactional?
No. Abandoned cart messages are marketing, not transactional, because they aim to drive a sale rather than confirm an existing order. That classification matters: it means SMS reminders require express written opt-in and an easy opt-out, and they must respect marketing quiet hours.
What is a good cart abandonment rate?
Anything meaningfully below the 70% documented average is good, but context matters more than the headline number. Mobile and first-time traffic abandon more; returning and desktop buyers abandon less. Track your own rate by device and source rather than chasing a single benchmark figure.
How much revenue does a cart abandonment SMS make per send?
Benchmarks vary by how it's measured. Omnisend's 2025 automation data shows about $0.74 per SMS send across all flows, while Klaviyo's 2026 cart benchmarks report roughly $4.48 revenue per recipient for cart texts and Postscript puts cart SMS earnings at $3.52–$10.95 per message at the 25th–75th percentile.