Bulk SMS in Cameroon: ART, Sender ID and Consent Guide
Bulk SMS Cameroon guide: ART and MINPOSTEL context, sender ID registration on MTN, Orange and Camtel, the 2024 data protection law, French and English SMS.
By OmniChannels.ai Editorial Team · Reviewed by BroadNet Messaging Solutions Team
SMS & OTP
Short answer
To send bulk SMS in Cameroon, use a provider with routes to MTN Cameroon, Orange Cameroon and Camtel, register an alphanumeric sender ID (up to 11 characters) before launch, and send marketing only to people with documented, timestamped consent. Include STOP wording, keep OTPs apart from promotions, and write French or English in plain GSM-7 where possible to stay at 160 characters.
On this page
- What rules apply to bulk SMS in Cameroon?
- What does the data protection law change?
- How does sender ID registration work in Cameroon?
- Which operators carry SMS in Cameroon?
- How should you separate OTP and promotional traffic?
- How do French and English text affect SMS length?
- When should you send?
- A worked example: a Douala retailer
- What is a launch checklist for bulk SMS in this market?
- What are the common mistakes?
- How OmniChannels.ai helps
Key takeaways
- Our regulation data lists the Agence de Régulation des Télécommunications (ART) as the regulator; sender ID requirements are set by the operators, with a typical lead time of 7 to 14 business days.
- Three operators appear in our coverage data, all with direct routes: MTN Cameroon (624-01), Orange Cameroon (624-02) and Camtel (624-04).
- Our regulation data asks for verifiable opt-in with timestamped consent records kept for at least 12 months and produced on regulator request, and STOP wording in every promotional message.
- Cameroon's personal data protection law (Law No. 2024/017 of 23 December 2024) is reported to have taken effect on 23 June 2026; read its text and the new authority's guidance before building sign-up flows.
- Most French and English text fits the GSM 7-bit alphabet (160 characters, 153 per part), but accented letters such as ê, â, î, ô and û and the lowercase ç push a message to Unicode at 70 (67).
This guide is for banks, fintechs, retailers and operations teams that want to send business SMS to mobile numbers in Cameroon: OTPs, payment alerts, delivery updates and promotions. It explains who regulates what, how sender IDs work, what consent evidence to keep, and how French and English text affect message length. It is a practical overview, not legal advice; confirm requirements with Cameroonian counsel and the operators before launch.
What rules apply to bulk SMS in Cameroon?
Three layers apply: telecom regulation by ART under the Ministry of Posts and Telecommunications (MINPOSTEL), operator policy on sender IDs, and data protection law. None is a single "bulk SMS law", so you assemble the picture from each.
| Layer | What it covers | Where to check |
|---|---|---|
| ART and the operators (MTN, Orange, Camtel) | Telecom regulation, sender ID set-up, routes, filtering | art.cm |
| Data protection law (Law No. 2024/017) | Lawful basis and consent for personal data; data subject rights | Droit Médias & Finance |
| Our regulation data | Verifiable opt-in, records kept 12 months, STOP wording | Confirmed at onboarding |
Our regulation data lists ART as the regulator and records that sender ID requirements are set by the operators. The rule that matters on launch day is the one your operator route enforces.
What does the data protection law change?
Cameroon adopted Law No. 2024/017 of 23 December 2024 on the protection of personal data. One legal news report states that it entered into force on 23 June 2026 after a transition period for businesses and administrations, and that it lets people object to their data being used for commercial prospecting. Another reports that the law created an independent data protection authority. We could not verify the article-level wording on commercial messaging from a primary text, so we do not quote clauses here.
What this means in practice:
- Consent evidence is your protection. Store the exact wording shown, date and time, channel and number.
- Honour objections at once and keep one suppression list for all campaigns and channels.
- Read the law and authority guidance before designing sign-up flows, and ask local counsel about edge cases.
Our regulation data adds two operating rules: opt-in must be verifiable, with timestamped consent records kept for at least 12 months and produced on regulator request, and every promotional message must carry STOP or equivalent opt-out wording. Our opt-in consent generator drafts consent text, and the guide to opt-in consent across channels shows how to record it.
How does sender ID registration work in Cameroon?
Business SMS to Cameroon uses an alphanumeric sender ID of up to 11 characters, which shows your brand instead of a number; a numeric long code is supported on select networks. Our data says requirements are set by the operators and confirmed at onboarding, with a typical lead time of 7 to 14 business days. Treat it as typical, not guaranteed.
| Step | What to do |
|---|---|
| 1. Classify | Decide which traffic is transactional (OTP, alerts) and which is promotional |
| 2. Choose names | Use your registered brand; avoid names that imitate banks, mobile money services or operators |
| 3. Prepare documents | Company registration papers and an authorisation letter naming the IDs and your provider |
| 4. Submit | Your provider files with the operators and tracks each approval |
| 5. Test | Send an OTP and a promotion to MTN, Orange and Camtel handsets |
The sender ID letter generator drafts the letter, and the Cameroon sender ID page shows the current position. If you want us to prepare and file the registration, see registrations; approval decisions stay with the operators and regulator. Formats are explained in our guide to sender ID types.
Which operators carry SMS in Cameroon?
Three mobile networks appear in our coverage data, each with a direct route.
| Operator | MCC-MNC |
|---|---|
| MTN Cameroon | 624-01 |
| Orange Cameroon | 624-02 |
| Camtel | 624-04 |
Camtel's mobile service trades under the Blue brand, and a fourth mobile operator, Nexttel, exists in the market but is not in our coverage data; confirm its availability with us before relying on it. Our regulation data names MTN and Orange in its sender ID entry. Read delivery reports per operator, not as one blended figure; see improving SMS delivery rates.
How should you separate OTP and promotional traffic?
Keep OTPs, payment alerts and other service messages on a transactional sender ID and route, and promotions on their own. A promotion inside an OTP puts login codes at risk if the route is filtered. SMS is a common channel for one-time codes in banking and mobile money flows, so a blocked OTP route is costly.
| Traffic | Example | Practice |
|---|---|---|
| Transactional | OTP, payment confirmation, delivery alert | No promotion inside; own sender ID; any hour |
| Promotional | Sale, new product, loyalty offer | Consented numbers only; STOP wording; daytime schedule |
| Mixed | "Colis expédié. Profitez de 10 % de remise" | Avoid; the offer makes it promotional |
For OTP content and security, read the OTP authentication messages guide.
How do French and English text affect SMS length?
Plain French and English fit the default GSM 7-bit alphabet, so one message holds 160 characters (153 per part when split). The alphabet includes é, è, à, ù, ì, ò and an uppercase Ç, but not ê, â, î, ô, û or a lowercase ç, so one of those letters switches the whole message to Unicode at 70 characters (67 per part). See GSM-7 and concatenated SMS.
| Encoding | Single message | Per part when concatenated |
|---|---|---|
| GSM 7-bit | 160 characters | 153 |
| Unicode (UCS-2) | 70 characters | 67 |
These examples were counted against the limits (Douala Market is a synthetic brand):
| Message | Encoding | Characters | Parts |
|---|---|---|---|
Douala Market: votre code est 482913. Ne le partagez avec personne. |
GSM-7 | 67 | 1 |
Douala Market: your order 1042 arrives tomorrow before 5 pm. Thank you! |
GSM-7 | 71 | 1 |
Douala Market: -20 % sur les fruits samedi! Détails: dmarket.example/s. STOP: dmarket.example/stop |
GSM-7 | 98 | 1 |
Douala Market: -20 % sur les fruits samedi! Détails: dmarket.example/s. Pour arrêter, répondez STOP |
Unicode | 99 | 2 |
The last row shows the cost of one accent: the single "ê" in "arrêter" turns a one-part message into two. Rewrite templates to avoid those letters and check them in the SMS character counter. More detail: SMS character limits and Unicode.
When should you send?
We have not found a regulator-published time-of-day window for promotional SMS in Cameroon, and our regulation data records none. Agree sending hours with the operators, send promotions in local daytime (West Africa Time, UTC+1) and avoid late evenings. OTPs and alerts can go at any hour. The send time planner helps schedule, and SMS marketing rules by country compares markets.
A worked example: a Douala retailer
"Douala Market" (synthetic) has 15 shops and a delivery app, and wants OTPs, delivery alerts and a weekly promotion.
- It registers two sender IDs, one transactional and one promotional, and tests both on MTN, Orange and Camtel.
- It collects consent in the app and at the till, storing wording, timestamp and number for at least 12 months, with STOP wording in each promotion.
- OTPs and alerts use short French or English text chosen from each customer's language preference.
- Templates avoid ê, â, î, ô, û and ç so they stay at one part.
- Opt-outs feed one suppression list that also covers WhatsApp and email.
What is a launch checklist for bulk SMS in this market?
Work through these steps in order before your first campaign; each one removes a common cause of blocked or undelivered messages.
- Confirm your use cases and split them into transactional and promotional traffic.
- Start sender ID work early, allowing for 7 to 14 business days, and name the IDs after your registered brand.
- Agree the consent source for every list, and store wording, timestamp, channel and number.
- Prepare opt-out handling: STOP wording and consent records kept for at least 12 months, with one suppression list.
- Finish the templates in the right language and check each one in the character counter.
- Test on MTN, Orange and Camtel handsets, including a delayed or failed delivery report.
- Set sending hours with the operators and schedule promotions for local daytime.
- Review delivery reports per operator after the first small send, then scale up.
Do not skip step 8: a small pilot to a consented group exposes filtering and formatting problems before they affect a full audience.
What are the common mistakes?
- No consent evidence that can be produced on request.
- Look-alike names imitating banks or mobile money services risk blocking.
- Bilingual messages that double the length; send one language per customer.
- Stray accents that turn 160 characters into 70.
- Mixing OTP and promotion on one route.
- Treating lead times as promises. Add buffer beyond 7 to 14 business days.
How OmniChannels.ai helps
OmniChannels.ai is powered by BroadNet, which has direct routes to MTN Cameroon, Orange Cameroon and Camtel in our coverage data. We prepare and file sender ID registration with you, support French and English content, and give you per-operator delivery reports, with SMPP 3.4 for high volume. For indicative list prices, see the Cameroon SMS pricing page, then book a demo. Small team? Our SMS marketing guide for small businesses covers the basics.
Frequently asked questions
Is bulk SMS legal in Cameroon?
Yes. Businesses send OTPs, alerts and marketing by SMS, provided they use a legitimate route, an accepted sender ID and a lawful basis for processing numbers, which for marketing means documented consent. No single statute is called a bulk SMS law; rules come from ART, the operators and data protection legislation.
Do I need to register a sender ID in Cameroon?
Plan on it. Our regulation data says requirements are set by the operators and confirmed by BroadNet at onboarding, with a typical lead time of 7 to 14 business days. That range is typical, not guaranteed. Our team prepares and files the registration with you and tests delivery on each network.
Do I need consent to send promotional SMS in Cameroon?
Treat consent as required. Our regulation data calls for verifiable opt-in with timestamped records kept for at least 12 months and produced on regulator request, and every promotional message must include STOP wording. Cameroon's 2024 personal data law adds statutory duties, so ask local counsel about edge cases.
Is there a time-of-day rule for SMS in Cameroon?
We have not found a regulator-published time-of-day window for promotional SMS in Cameroon, and our regulation data records none. Agree sending hours with the operators, send promotions in local daytime (West Africa Time, UTC+1), and keep OTPs and alerts on a transactional route that runs at any hour.
Should I write SMS in French or English?
Cameroon is officially bilingual. Choose the language per customer, from sign-up preference or account data, and avoid sending both in one message because it doubles the length. Most plain French and English fits GSM-7, though some accented letters trigger Unicode, so check each template in a character counter.
Can I use mobile money OTPs by SMS?
Yes, SMS is widely used for one-time codes in finance and mobile money flows. Send them on a dedicated transactional sender ID, keep the text short, include the code and your brand, and never put a promotion inside. Our guide to OTP messages covers expiry and fraud controls.
Sources
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