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Consent and compliance for business messaging in Nigeria

A Nigerian phone number is personal data under the Nigeria Data Protection Act 2023, so a messaging list needs a lawful basis, a purpose the recipient would recognise, and a way out. The DND register adds a separate, network-enforced restriction on unsolicited marketing SMS.

By SendoziUpdated 6 min read

Two separate sets of rules apply

Business SMS in Nigeria sits under two regimes at once. The Nigeria Data Protection Act 2023, administered by the Nigeria Data Protection Commission, governs how you collect and handle the phone numbers. The Nigerian Communications Commission's Do Not Disturb framework governs whether the networks will carry unsolicited marketing to a given subscriber.

They are independent. Satisfying one does not satisfy the other: a perfectly lawful marketing list will still be blocked for DND-active recipients, and a message that gets through DND can still be a data protection failure if the number was scraped.

What the NDPA means for a contact list

A phone number is personal data
It identifies a living individual, so collecting, storing and using it is processing under the Act, with all that follows.
You need a lawful basis
Consent is one basis. Performance of a contract - sending a receipt for something the customer bought - is another. Legitimate interest can apply but has to be reasoned and documented, not assumed. Marketing to strangers rests on consent in practice.
Purpose limitation
A number collected to deliver an order is not automatically available for a marketing campaign. If you want it for marketing, ask for that at the point of collection.
You are the controller; Sendozi is a processor
You decide who is messaged and why. Sendozi processes the list on your instruction to deliver the messages. The obligations to your recipients sit with you.
Data subject rights
People can ask what you hold, ask for it to be corrected, and object to marketing. Build a route for those requests before you need one.
Retention
Keep numbers for as long as the purpose requires, then stop. An indefinitely growing list of numbers nobody can account for is a liability rather than an asset.

The Nigeria Data Protection Commission is the authority here: it publishes the Act, its implementation guidance and the registration requirements that apply to data controllers. Check the current position with them, or with a Nigerian practitioner, before relying on any summary - including this one.

  • Specific. 'Send me offers from Acme by SMS' rather than a blanket agreement buried in terms.
  • Affirmative. An unticked box the person ticks, not a pre-ticked one they fail to notice.
  • Unbundled. Not a condition of buying something they were buying anyway.
  • Recorded. Store what they agreed to, when, and through which form or channel.
  • Revocable. Withdrawal must be as easy as giving it was.

Opt-out, and how it works on Sendozi

Every promotional programme needs a working way out. The complication in SMS is that an alphanumeric sender ID is one-way: recipients cannot text back to it, and Sendozi does not receive inbound SMS, so a "Reply STOP" instruction would be a promise you cannot keep.

  1. 1

    Publish a route you actually monitor

    A phone number, an email address or a short link to an unsubscribe page. Put it in the message.

  2. 2

    Record the opt-out on the suppression list

    Sendozi checks suppression on every send, so a recipient added once is excluded from everything afterwards.

  3. 3

    Apply it across programmes, not just the campaign it came from

    Someone who opts out of marketing has opted out of marketing, not of one particular blast.

  4. 4

    Keep the record

    When they asked, through which route, and when it took effect. That record is your evidence if the request is later disputed.

The DND register

Separately from data protection, Nigerian subscribers can activate Do Not Disturb with their network to block unsolicited marketing. Once active, the network filters promotional traffic before it reaches the handset. Transactional messages travel a corporate route that is not treated as marketing. The DND guide covers the mechanics; the compliance point is simply that DND is not optional and cannot be bypassed.

Records worth keeping

RecordWhy you want it
Source and date for each contactThe first question anyone asks about a complaint is where the number came from
Consent wording as it appearedConsent is judged on what the person was shown, not what you meant
Opt-out requests and when they took effectEvidence that you acted, and how quickly
Message content sent to each recipientDistinguishes what you sent from what someone remembers receiving
Delivery status per recipientAnswers the 'we never received it' dispute with a network response
Who in your team sent whatAccountability inside your own organisation

Sendozi keeps the last three for you: message content, per-recipient delivery status with its timeline, and the account that sent it, all exportable. The first three are yours to keep, because they live at the point where you collected the number.

A practical checklist

  1. Write down the lawful basis for each messaging programme you run. If you cannot, that is the finding.
  2. Check that your collection form asks for marketing separately from the transaction.
  3. Give every promotional message a working opt-out route and honour it across all programmes.
  4. Classify each message honestly as transactional or promotional and route it accordingly.
  5. Publish a privacy notice that says what you collect, why, how long for and who processes it.
  6. Know your obligations as a data controller under the NDPA, including whether you must register with the NDPC.
  7. Delete numbers you no longer have a reason to hold.
  8. Review this annually, and whenever a new programme starts.

Frequently asked questions

Do I need consent to send transactional SMS in Nigeria?
You need a lawful basis, which for a receipt, an OTP or a delivery update is usually the transaction or contract itself rather than marketing consent. The number is still personal data, so the rest of the NDPA obligations continue to apply.
Is buying an SMS list legal in Nigeria?
Messaging people from a purchased list is very hard to reconcile with the NDPA: you cannot evidence consent, you do not know the purpose the numbers were collected for, and the recipients have no relationship with you. It also performs badly and puts your sender ID at risk.
Does replying STOP unsubscribe someone from Sendozi messages?
No. Sendozi does not receive inbound SMS, so a STOP reply is not captured. Give recipients a route you monitor - a phone number, email address or link - and record the opt-out on your suppression list, which every send checks.
Is Sendozi NDPA certified?
No, and no messaging platform should claim to be. Sendozi operates as a data processor and provides consent, suppression and record-keeping tooling designed to support compliance. Certification is a different thing from compliant design, and Sendozi does not claim it.
Who is responsible if a recipient complains?
You are, as the controller who decided to message them. Sendozi processes the list on your instruction and can supply the delivery records, but the lawful basis and the consent record are yours.

Institutional due diligence?

Talk to the team about data handling documentation for a procurement or compliance review.