The verdict in three sentences
Email is the best-ROI channel for a store that already owns a customer base: the sending cost is measured in fractions of a FCFA while SMS costs 15 to 40 FCFA. The key is not to send more, but to segment by behaviour and automate three scenarios: welcome, recovery and post-purchase. Paired with a WhatsApp notification, email reaches solid open rates and re-engages an already-acquired audience, for free or almost.
The email scenarios that pay
Each automation targets a precise moment in the customer journey. Set them up once and they run by themselves.
| Scenario | Trigger | Goal | Typical open rate |
|---|---|---|---|
| Welcome | Signup / first purchase | Convert + introduce brand | 40 to 60 % |
| Cart / browse | Abandon or viewed product | Recover the sale | 25 to 40 % |
| Post-purchase | Confirmed delivery | Review + repurchase | 30 to 45 % |
| Reactivation | 60 days no purchase | Wake the dormant customer | 15 to 25 % |
| Newsletter | Weekly / monthly | Nurture the relationship | 15 to 30 % |
Segmentation multiplies the effect: an email targeted at customers of a specific category converts 2 to 3 times better than a mass send.
Cost per channel: why email wins
Compared with other channels, email has near-zero marginal cost, which explains its unbeatable ROI on an existing base.
| Channel | 2026 unit cost | Reach | Best use |
|---|---|---|---|
| fraction of a FCFA / send | Opt-in base | Recovery, newsletter, post-purchase | |
| 5 to 30 FCFA / message | Active contacts | Notification, urgent reminder | |
| SMS | 15 to 40 FCFA / SMS | All mobiles | Alert, code, confirmation |
| Meta Ads | CPA 1,500 to 4,000 FCFA | New customers | Acquisition |
In Anglophone markets, the same playbook applies in Lagos and Accra: email sending cost stays negligible versus SMS, and WhatsApp serves as a complementary notification channel.
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Mini case study
Ousmane, who runs an online grocery in Abidjan, has a base of 2,000 customers. He sends a monthly newsletter plus a post-purchase automation. Open rate: 30 %, i.e. 600 readers, of whom 3 % buy (18 orders) at a 20,000 FCFA average order = 360,000 FCFA of revenue. Sending cost: negligible (a few thousand FCFA of tooling per month). The ROI runs in the tens to one.
FAQ
Does email still work in West Africa? Yes, on an existing opt-in base. A welcome email's open rate reaches 40 to 60 %, and the sending cost is a fraction of SMS. It is the best ROI for re-engaging already-acquired customers.
Should I pair email and WhatsApp? Yes. Send the email, then a short WhatsApp notification nudges the open. This duo combines email's near-zero cost with WhatsApp's high open rate.
Which segmentation should I prioritise? By purchase behaviour: recent customers, dormant ones, big baskets, preferred category. A segmented send converts 2 to 3 times better than a mass send at the same cost.
How many emails per month without tiring the list? A monthly or twice-monthly newsletter plus triggered automations. Beyond that, unsubscribe rates climb. Quality and relevance beat frequency.
Which tool should I use? An email tool with automations and segmentation, integrated with the store to trigger post-purchase and cart scenarios. The monthly cost stays modest against the revenue re-engaged.
Let's talk about your project. We set up your segmented email automations, paired with WhatsApp, integrated with your store. 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.
