How to Combine SMS, WhatsApp and Email Marketing in Africa
You already send SMS. Your customers already message you on WhatsApp. Email sits somewhere in the middle, used for receipts and ignored for almost everything else.
This playbook shows you how to combine SMS, WhatsApp and email marketing into one plan: which channel carries which message, how to sequence them across a campaign, and how to run all three for African customers without stitching together three separate tools.
How do you combine SMS, WhatsApp and email marketing?
Give each channel one job, build one contact list you segment once, then sequence the channels so each message picks up where the last one left off.
Email carries detail: the full story, the images, the catalogue, the terms. SMS carries urgency in a short line that reaches every phone, including the ones with no data left. WhatsApp carries the conversation, which is where your customer asks the question that decides the sale.
Run the three channels separately and you send the same message three times. Run them as a sequence and each channel does the part it is best at.
SMS vs email vs WhatsApp: the three channels at a glance
The honest answer to SMS vs email marketing is that neither one wins. Email carries detail, SMS carries urgency, WhatsApp carries the conversation, and the table below sets out what each channel is for, what the customer needs in order to receive it, and what changes in an African market.
| Channel | Best for | Typical message | Urgency fit | What the customer needs to receive it | African-market note |
|---|---|---|---|---|---|
| Detail, storytelling, proof, catalogues, receipts | Long-form, images, links, attachments | Low to medium. Read on the customer’s schedule | An email address and a data connection | Strongest with smartphone-first, urban and business audiences. The only channel with room for the full story | |
| SMS | Time-critical alerts, deadlines, reminders, one clear action | A couple of lines and one link | Highest. Typically read within minutes | Any phone with network coverage. No smartphone, no data plan | Reaches feature phones and customers who have run out of data, so nobody is excluded from the message |
| Two-way conversation, questions, rich media, follow-up | Short message plus media, expecting a reply | Medium to high | A smartphone and data | The default conversational channel for many African customers, and the one where they actually reply |
This is the piece most channel comparisons miss. Global marketing guides treat the decision as SMS against email, a two-horse race, and leave out the channel your customers open most. For a fuller view of how the conversational and voice channels compare, see our guide on choosing the right channel mix for African customers, and for the interactive side, USSD vs SMS vs WhatsApp.
Why the African channel mix is different
Most marketing advice assumes a customer with a smartphone, an open data bundle and an inbox habit. Plenty of your customers have two of those three, and some have one. That changes the calculation in three practical ways.
Data is a decision, not a given. A customer whose bundle has run out cannot open your email or your WhatsApp message, but their phone still receives SMS. When a message has to land, whether it is a payment confirmation, a delivery window or a service interruption, SMS is the only one of the three that does not depend on the customer being connected to the internet.
WhatsApp is where the conversation already happens. For many African customers, WhatsApp is the default way to reach a business. That makes it the natural place for questions, negotiation and after-sales support, and an awkward place for a one-way broadcast nobody asked for.
Email is the record. Receipts, invoices, policy documents and booking confirmations belong in an inbox the customer can search months later. That job does not disappear because your customers prefer WhatsApp. It just goes under-served when email is treated as an afterthought.
Feature phones remain part of the picture too. Where a meaningful share of your customers use a device without a browser, SMS is not a backup channel. It is the only channel that reaches them at all.
When should you use email vs SMS vs WhatsApp?
Use email when the message needs space, SMS when it needs to arrive now, and WhatsApp when it needs an answer.
That one line settles most decisions. The detail below settles the rest.
Use email when
- The message needs more than two sentences to make sense
- You are showing products, prices in context, sizes, or a full catalogue
- You are building a relationship over weeks rather than pushing a single action
- The customer needs to keep the message and find it again later, such as a receipt or a booking confirmation
- You are running a welcome or onboarding sequence for a new signup
Our breakdown of the seven types of email every business needs maps these to specific campaigns you can copy.
Use SMS when
- There is a deadline, and missing it costs the customer something
- The message is one sentence and one action
- You need to reach customers who may have no data, no smartphone, or no inbox habit
- The update is operational: order dispatched, payment received, appointment tomorrow
- You are reaching a rural or mixed-device customer base where email coverage is thin
Use WhatsApp when
- The customer will have questions before they act
- You need to send a photo, a voice note, or a document into a live conversation
- You are recovering an abandoned order and a human reply will close it
- Support is the job, not broadcast
- Your customer base already messages you there, which for many African SMEs it does
Our WhatsApp marketing playbook for Ghana SMEs goes deeper on running that channel well.
What should you send by email vs SMS?
Send anything the customer needs to read carefully by email. Send anything the customer needs to act on immediately by SMS.
By email: newsletters, product launches with images, price lists and catalogues, order receipts and invoices, welcome and onboarding sequences, event invitations with full details, re-engagement campaigns for lapsed customers, and anything with terms attached.
By SMS: one-time passwords and verification codes, delivery and dispatch updates, payment confirmations, appointment reminders, flash-sale deadlines, low-stock or last-call nudges, and service disruptions.
By WhatsApp: the follow-up to any of the above. When a customer replies to your SMS with a question, WhatsApp is where that conversation belongs.
One rule keeps this clean: never split a single message across channels. A customer who gets half the story by SMS and the other half by email gets neither.
Why a multichannel marketing strategy beats any single channel
The evidence for pairing SMS and email marketing with a conversational channel is strong, and it is worth being precise about where it comes from.
Omnisend analysed 135,000 campaigns and more than 610 million messages, and found that marketers who used three or more channels in a campaign earned a 494% higher order rate than single-channel campaigns. That research covers global e-commerce campaigns, not African ones, so read it as evidence that the multichannel pattern works rather than as a benchmark for your own market.
The same study found that campaigns that included SMS were 429% more likely to result in conversion than single-channel campaigns. Same global e-commerce scope, same caveat. The direction is what matters: adding channels to a campaign lifts results, and SMS carries a large share of that lift.
The mechanism behind those numbers is straightforward. SMS is typically read within minutes of delivery, which is why it carries deadlines well and long explanations badly. Email is read later and more carefully, which is why it carries detail.
WhatsApp gets a reply, which is why it closes. Customers you reach across more than one channel also tend to be worth more to your business over time than customers you only ever email.
Arkesel runs Email Marketing, the SMS Platform and the WhatsApp Business API as products on one platform, so you can build the sequence below without opening three separate vendor accounts.
A multichannel sequence you can run this month
Here is a seven-day product-launch sequence a retailer in Accra, Lagos or Nairobi can run with the three channels. Adapt the days; keep the structure.
Day 1 — Email: the announcement. The full story, product images, prices, sizes, delivery terms, and one clear link to buy. This is the only message in the sequence with room for all of it.
Day 3 — SMS: the nudge. Send only to the segment that did not open or did not click. One line, one link, one real deadline.
“New stock in, 20 pieces left, closes Friday” plus the link does more work than a paragraph.
Day 4 — WhatsApp: the conversation. Reach the people who clicked but did not buy. They stopped for a reason, usually sizing, delivery time, or payment.
Answer the question and send the payment link in the same thread.
Day 6 — SMS: the last call. Engaged segment only. Deadline today, link, done. Customers who ignored the first two messages do not need a third.
After the sale. Email carries the receipt, SMS carries the dispatch and delivery updates, WhatsApp carries the support conversation if anything goes wrong. That split holds for every order you ever fulfil.
For triggered versions of these messages, our guide to SMS marketing automation and triggered campaigns covers the setup.
The same structure for a service business
The sequence holds for a clinic, a school, an insurer or a gym. Only the trigger changes.
Email carries the detail. A renewal notice with the policy summary, what changed this year, the payment options and the deadline. Everything the customer needs to decide, in a message they can find again.
SMS carries the deadline. Three days out, one line: renewal closes Friday, here is the link. This is also the message that reaches the customer sitting in traffic with no data left.
WhatsApp carries the objection. Renewals stall on one question, usually price, cover or paperwork. A short conversation answers it in a way no broadcast can.
Email closes the loop. Receipt, updated documents, next renewal date.
Appointment reminders follow the same shape: email at booking with the full details, SMS the day before with the time and location, WhatsApp for reschedules. Once you see the pattern, you can apply it to almost any customer journey you run.
What are the rules for sending promotional messages in Ghana?
In Ghana, the National Communications Authority sets your send times and your frequency. Permission and opt-out handling are on you, on every channel. A sequence that annoys people is worse than no sequence at all, so settle these four rules before you send anything.
Send inside the legal window. The NCA’s consumer guidance directs that promotional messages reach consumers from 8:00 a.m. to 7:00 p.m. only, and that promotional messages should not be sent to consumers on Sundays. That guidance covers promotional messages sent from mobile network operators and from third-party providers alike, so your campaign sits inside it. The NCA’s Code of Conduct for Unsolicited Electronic Communications applies the same window to network operators’ own commercial messaging (s19.2.3).
Cap the frequency. For non-network promotional messages — the category your campaign sits in — the NCA’s consumer guidance directs that each promotional communication go out no more than once a day, and that any communication introducing a product or service be sent only three times in a month. The Code’s separate three-per-30-days cap (s19.2.1) governs network operators’ own promotional messaging, not a retailer’s campaign. The sequence above sends on Day 3 and Day 6, one message each, well inside both limits.
Collect permission per channel. An email opt-in is not an SMS opt-in, and neither is a WhatsApp opt-in. Ask for each one at the point where it makes sense, and honour opt-outs immediately — every campaign needs a working unsubscribe path.
Respect the channel’s own conventions. WhatsApp’s business messaging policy states that you may only initiate conversations using an approved message template, and that you may reply to a customer’s own message without a template for a limited window after they write to you. Build the templates you will need before the campaign, not during it.
One more thing worth knowing: the Code places the sender-display obligation on licensed operators, who must show the registered network operator or service provider’s name, or a dedicated short code, on commercial messages (s14.2). That display is arranged through your provider when you set up sending, not filed by you.
Rules differ by country, so check the regulator wherever you send. Our guide on the legal and regulatory rules for bulk SMS in Ghana covers Ghana in full, and the NCA-compliant sending workflow shows what it looks like in practice.
The mistakes that break a multichannel plan
Four failures account for most abandoned multichannel campaigns, and all four are avoidable.
Sending the same message on all three channels. This is the most common one and the easiest to fix. If your SMS is a shortened version of your email, one of the two is unnecessary.
Every channel earns its place in the sequence by doing something the others cannot.
Treating frequency as a per-channel budget. Your customer does not experience three channels. They experience you.
Four emails, three SMS and two WhatsApp messages in one week is nine interruptions, and they will opt out of all three.
Opening a channel you cannot staff. WhatsApp invites replies. When nobody answers those replies inside a working day, the channel costs you more trust than it builds.
Open the conversation only when someone is there to have it.
Launching all three at once. Add one channel to a campaign that already works, measure it for a full cycle, then add the next. A sequence you run every month beats a strategy you abandon in week three.
Segment once, message everywhere
Untargeted blasts hurt engagement on every channel. The fix is the same everywhere: decide who a message is for before you decide how to send it.
Build a small set of segments you actually use, and define them once so the same definition applies whether the message goes out by email, SMS or WhatsApp:
- Recent buyers — the people most likely to buy again
- Lapsed customers — no purchase in 90 days, the natural re-engagement audience
- High-value customers — worth a WhatsApp conversation, not a broadcast
- Engaged but unconverted — opened, clicked, did not buy. This is your SMS and WhatsApp segment
- Location and language — split by the city you can deliver to fastest, and by the language your customers actually reply in. A message in the right language to the right city outperforms a wider, blander one
Good segments start with a good list. Our guide on building a targeted email marketing list covers how to collect the data that makes segmentation possible, and how email marketing works step by step covers the fundamentals if email is the newest of your three channels.
If you are also weighing up where customer data should live, CRM vs email marketing sets out what each system is actually for.
How Jumia runs multichannel across Africa
Jumia, which serves 6.8 million active consumers across 11 African countries, does not treat email as an afterthought.
It runs omnichannel advertising for 400+ brand partners, combining web banners, push notifications and email rather than relying on any one of them. Those figures come from Jumia’s Africa E-commerce Index 2021 and its Harvard Digital Innovation submission, so treat them as a snapshot of how a continental operator structures its channel mix rather than as current-year numbers.
The lesson transfers down to a shop with 2,000 customers. The channels change with your scale; the principle does not. Reach the customer where they are, in the format that message deserves.
Can one platform send email, SMS and WhatsApp?
Yes. Arkesel offers SMS Platform, WhatsApp Business API and Email Marketing as products on one platform, so you run all three channels through one provider instead of three separate contracts, three support queues and three invoices.
Email Marketing runs campaigns, automation flows, contact segmentation, A/B and split testing, and transactional email.
SMS Platform delivers bulk SMS at scale over direct connections to MTN, Telecel and AirtelTigo, with real-time delivery tracking and a REST API for your developers. It is available in Ghana, Nigeria, South Africa and Tanzania.
WhatsApp Business API gives you message templates and webhooks so several agents and systems message customers from one business number, which the free WhatsApp Business app does not support.
Costs differ by channel and by volume, so check current pricing before you plan a campaign budget.
One honest note: running three channels with one provider does not design the campaign for you. You still decide the segments, the sequence and what goes where. That design is the work, and this playbook is it.
If you are still comparing tools, our roundup of customer communication tools for businesses covers the wider market.
Frequently asked questions
How do I combine SMS, WhatsApp and email marketing?
Give each channel one job, segment your contact list once, then sequence the channels across a campaign. Email carries the detail, SMS carries the deadline, WhatsApp carries the conversation that closes the sale.
When should I use email vs SMS vs WhatsApp?
Use email when the message needs space, SMS when it needs to arrive now, and WhatsApp when it needs an answer. Email suits catalogues, receipts and onboarding; SMS suits deadlines, OTPs and delivery updates; WhatsApp suits questions and follow-up.
What should I send by email vs SMS?
Send newsletters, product launches, price lists, receipts and onboarding sequences by email. Send one-time passwords, delivery updates, payment confirmations, appointment reminders and flash-sale deadlines by SMS. Never split one message across both.
Can one platform send email, SMS and WhatsApp?
Yes. Arkesel offers Email Marketing, SMS Platform and WhatsApp Business API on one platform, so African businesses run all three channels through a single provider rather than buying and wiring together three separate tools.
How do African businesses run multichannel marketing?
The ones who do it well lean on SMS for universal reach, because it works on feature phones and without data; WhatsApp for conversation, because that is where customers already message businesses; and email for depth and record-keeping. Larger operators do the same at scale. SMS marketing in Ghana covers the reach channel in full.
Getting started with your first multichannel campaign
Start with one campaign, not a whole strategy. Pick your next promotion, write the email version first because it forces you to know what you are actually saying, then cut it down to one SMS line and prepare two or three WhatsApp replies for the questions you already know are coming.
Run it once, then read one number per message rather than one number for the whole campaign:
- Day 1 email — open rate, then click rate on the buy link
- Day 3 and Day 6 SMS — delivery rate first, then clicks on the link. A weak click rate tells you nothing until you know the messages landed, which is what SMS delivery reports are for
- Day 4 WhatsApp — replies received, and how many of those replies ended in a payment
- The campaign — orders, attributed to the last message the customer opened before buying
Last-touch attribution is imprecise. It is also enough to tell you which message to keep, which to rewrite and which to drop next month.
The businesses that win at multichannel marketing are not the ones with the most channels. They are the ones who know what each channel is for.
Explore the Series
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