The verdict in three sentences
Between 60 and 80 % of carts are abandoned before payment, often out of hesitation or distraction. A sequence of 3 reminders at 1 h, 24 h and 72 h via WhatsApp recovers 15 to 30 %, for a unit cost of 5 to 30 FCFA per message. The key: personalise with the viewed product and attach a pre-filled Wave, Orange Money or Paystack payment link to remove all friction.
The reminder sequence that converts
Each message has a role: gentle reminder, then objection handling, then soft urgency. Avoid sending more than three.
| Reminder | Delay | Channel | Sample message | Recovery rate |
|---|---|---|---|---|
| 1 | 1 hour | Simple reminder + payment link | 8 to 12 % | |
| 2 | 24 hours | Reassurance (delivery, reviews) + link | 5 to 10 % | |
| 3 | 72 hours | WhatsApp / SMS | Small incentive (free delivery) | 3 to 8 % |
Realistic total: 15 to 30 % of abandoned carts recovered. On plain SMS the open rate is high but the cost rises; WhatsApp remains the best cost/impact ratio.
Costs per channel in 2026
Cost depends on channel and volume. WhatsApp Business API bills per conversation; SMS is per unit.
| Channel | 2026 unit cost | Open rate | Best for |
|---|---|---|---|
| WhatsApp Business | 5 to 30 FCFA / message | 80 to 95 % | Personalised reminder + link |
| SMS | 15 to 40 FCFA / SMS | 90 % + | Customers without WhatsApp |
| ~0 to 5 FCFA / send | 15 to 30 % | Long, illustrated reminders |
In Anglophone markets, WhatsApp + Paystack Payment Link do exactly the same job in Lagos and Accra: pre-filled link, two-click payment, automated reminders.
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Mini case study
Ibrahim, a restaurateur in Abidjan who also sells his sauces online, records 500 abandoned carts a month at a 12,000 FCFA average order. He turns on the 3-reminder sequence. Recovery rate: 20 %, i.e. 100 carts x 12,000 = 1,200,000 FCFA recovered. Message cost: 500 carts x 3 messages x 20 FCFA = 30,000 FCFA. Return on investment: 40 to 1.
FAQ
How many reminders without annoying the customer? Three at most, over 72 hours. Beyond that, complaint rates climb and the marginal effect turns negative. The first reminder at 1 h captures most of the recovered sales.
WhatsApp or SMS? WhatsApp first: cost of 5 to 30 FCFA, 80 to 95 % open rate, and above all the ability to show the product image with a payment link. SMS is a fallback for customers without WhatsApp.
Do I need a pre-filled payment link? Absolutely. A Wave, Orange Money or Paystack link with the amount already filled in removes typing and lifts conversion by several points. It is the number-one recovery factor.
Can it all be automated? Yes. A trigger fires when the customer leaves checkout; the sequence runs by itself. All that remains is to track the recovery rate in the dashboard.
What realistic gain to expect? On a store losing 60 to 80 % of its carts, recovering 15 to 30 % often means 5 to 15 % of additional revenue, for negligible messaging cost.
Let's talk about your project. We set up your WhatsApp reminder sequence with pre-filled Wave/OM payment links, turnkey. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
