learn-pdpa-dnc-with-phoebe / Leader session 3 of 6
Learn PDPA + DNC with Phoebe · Leader track · Session 3 of 6

The DNC layer (the rules on every marketing call, text, and fax)

The Do Not Call provisions sit on top of the PDPA and govern one thing precisely: marketing messages to Singapore phone numbers. Three registers, one core duty - check before you send - and a surprising amount hinging on a single question: is this even a marketing message? This session gives leaders the shape of the DNC layer, teaches the check-before-send duty and its 21-day window, and shows why knowing what counts as marketing is half the compliance battle.

🟡 Medium Leaders: C-level · managers · marketers who sign off No jargon 45 min
0-3 · Welcome 3-20 · Concepts 20-40 · Exercises 40-45 · Q&A
Part 0

The layer over the top

Sessions a1 and a2 covered how you handle personal data at all. The Do Not Call layer is narrower and sharper: it only cares about marketing messages sent to Singapore phone numbers, and it gives every person in Singapore the power to opt out. For a leader, the DNC layer is where a single careless marketing blast turns into an enforcement decision - because the rule is not "do not annoy people", it is "you must have checked, and you must be able to prove it". This session makes that duty concrete.

Read this first This course is educational, not legal advice. It teaches from the PDPC's own published guidelines, but the law changes and every real situation has its own facts. Verify against the current PDPC Advisory Guidelines and get proper advice before you act.
Live - presented in session Self-study - read after class ★ Try it now prompt Sources covered at the end
★ What you walk out with today The three DNC registers on one picture, the check-before-send duty and its real 21-day window (not the stale 30 days), a clear test for what counts as a marketing message versus what is excluded, and a short list of questions for your DPO and marketing team.
Part 1 · covers the three registers and the core duty

Three registers + the core duty 9 min live

The Do Not Call Registry is really three lists in one - one for voice calls, one for text messages, one for faxes. A person can add their Singapore number to any or all of them. Your duty before marketing to a number is simple to state and easy to skip: either you hold their clear consent, or you have checked the register and confirmed the number is not listed.

The Do Not Call Registry - three lists No Voice Call No Text Message No Fax Message Marketing message to a Singapore number Do you have clear consent? Or: checked, not listed? Yes to either - you may send No to both - do not send The check has a shelf life: a confirmation is valid for 21 days. Numbers are checked against all three registers at once. A Singapore number is 8 digits starting 3, 6, 8, or 9. Old guidance said 30 days. Since 1 Feb 2021 the window is 21 days - using the stale number is a real risk.
🔍 Click to zoom - three registers, the consent-or-check duty, and the 21-day window
LiveWhat the three registers are3 min▶

The registry is not one list but three, because people opt out of different channels. A person might be happy to get a text but never want a cold call.

  • No Voice Call, No Text Message, No Fax Message - three separate registers for the three marketing channels the DNC provisions cover.
  • You check a number against all three at once. The result tells you which channels that number has opted out of.
  • It only applies to Singapore numbers - eight digits starting with 3, 6, 8, or 9. Numbers outside Singapore are outside the DNC registers.
★ Try it now (any chat AI)Explain Singapore's Do Not Call Registry to a marketing manager in four sentences: the three registers, what the check-before-send duty is, and the fact that a register check is only valid for 21 days. Plain English, no legal citations.
LiveThe check-before-send duty and its 21-day window3 min▶

This is the duty that most marketing blasts fail. Before you send a marketing message to a Singapore number, you must hold a confirmation that the number is not on the relevant register.

  • You must have checked, and be able to prove it. "We assumed it was fine" is not a defence. The confirmation is your evidence.
  • The confirmation is valid for 21 days. A check you ran a month ago does not cover today's send. This changed on 1 February 2021 - anyone still quoting the old 30-day window is working from stale guidance.
  • The clock is per number. A big list means a check that has to be recent for every number on it at the moment you send.
The leadership read The DNC duty is not "do not spam". It is an evidence duty: check, keep the confirmation, and make sure it is under 21 days old at send time. Whoever owns your marketing sends owns this - and a leader should know their name.
Self-studyConsent - the override that skips the check2 min read▶

There is one clean way around the register check: clear and unambiguous consent. If a person has given you clear, specific consent to send them marketing on that number, you may message them even if the number is on the register.

  • Consent overrides listing. The register protects people who have not agreed to hear from you. Someone who signed up to your offers has agreed.
  • But the consent has to be real. Clear and unambiguous means you can show what they agreed to and when - the same quality of consent session a2 demanded. A vague or bundled tick will not carry the weight.
  • Practical read: a well-run consent list is both cheaper and safer than checking the register on every send - which is why building genuine opt-in is the marketing team's real prize.
Part 2 · covers what counts as a marketing message

What even counts as marketing 8 min live

Before any of the register rules apply, there is a prior question that decides everything: is this a "specified message" - a marketing message - at all? A great deal of what businesses send is not, and those messages fall outside DNC entirely. Getting this test right stops you from either breaking the law or needlessly hobbling your own operations.

Specified message = marketing: promote goods, services, land, or a business Transactional / service receipts, delivery, account notices Business-to-business message to another organisation Ongoing relationship related to an existing dealing Emergency urgent safety or public messages Market research surveys, not an offer to sell Personal / domestic not sent for a business First question, always: is this a specified message? If it is not, the DNC registers do not apply at all.
🔍 Click to zoom - marketing at the centre, the excluded categories around it
LiveWhat makes a message "specified"3 min▶

A specified message is, in plain terms, a marketing message. Its purpose is to advertise, promote, or offer goods, services, land, or a business or investment opportunity - or to promote a supplier of those things.

  • The test is the purpose of the message, not the channel or who sent it. If the point is to get someone to buy or engage commercially, it is likely specified.
  • The first question is always "is this a specified message?" Only if the answer is yes do the register and consent rules come into play. Answer this before anything else.
Real world

Marina Retail's mixed blast. Our running-case SME sent one SMS campaign to its whole phone list: "Your order has shipped - and enjoy 20% off your next purchase this week only." The delivery half is a service message; the discount half is marketing. Bolting a promotion onto a service text turns the whole message into a specified message - and now the register check and consent rules apply to every recipient. Keeping the two apart would have kept the service texts clean.

LiveThe exclusions - what is not marketing3 min▶

Plenty of legitimate business messaging is not marketing at all, and the DNC provisions carve these out. Knowing the exclusions stops teams from over-restricting themselves out of fear.

  • Transactional and service messages - receipts, delivery updates, appointment reminders, account notices.
  • Business-to-business - a message sent to another organisation for its business purposes.
  • Ongoing relationship, emergency, market research, and personal or domestic messages are also outside the DNC scope. These sit in the Eighth Schedule of the law.
The leadership read Two questions, in order. First: is this a specified (marketing) message? If no, DNC does not apply - send it. If yes: do we have clear consent, or a register check under 21 days old? Consent overrides listing. Drill your marketing team on that order and most DNC risk disappears.
Exercise 1 of 2

Sort the messages ★ 12 min · pen and paper

The whole DNC layer rests on one skill: telling a specified message from an excluded one. Practise it on Marina Retail's real outbound before you trust it on your own.

Here are six of Marina Retail's messages. Sort each into "specified (needs DNC compliance)" or "excluded": (1) "Your order has shipped." (2) "Flash sale - 30% off today only." (3) A survey: "How was your delivery experience?" (4) A text to a wholesale partner about a bulk price list. (5) "Your warranty expires next month, renew now for 15% off." (6) "Store closed today due to flooding - stay safe."

For each, name the reason. Excluded ones should map to a category: transactional, B2B, market research, ongoing relationship, emergency, or personal.

Watch the tricky ones. Message 5 mixes a service reminder with a discount - the discount makes it specified. Message 3 is research, not an offer, so it is excluded.

Tally how many are specified. Those - and only those - need a lawful basis before you send.

★ Your sorting partner (paste into any chat AI)You are helping me apply Singapore's Do Not Call rules. I will paste marketing and non-marketing messages my business sends. For each, tell me whether it is a "specified message" (marketing, so DNC applies) or excluded, name the exclusion category if excluded, and flag any message that mixes service content with a promotion. Plain English, no legal citations. Here are my messages: [paste them]
Exercise 2 of 2

Prove the lawful basis ★ 8 min · your next leadership meeting

Pick one real marketing send your organisation is about to make and walk it through the DNC decision the way an auditor would.

Name the send: what is the message, and to which list of Singapore numbers?

Question one: is it a specified message? If it is pure service or B2B, you are done - it is out of scope. If it is marketing, continue.

Question two: what is our lawful basis - clear consent for these numbers, or a register check under 21 days old? Write down which, and where the evidence lives.

If you cannot point to either the consent record or a recent register-check confirmation, the honest answer is "we do not have a lawful basis yet". That is the finding - and the reason to fix the process before the send, not after a complaint.

Why the evidence matters The DNC duty is not satisfied by good intentions - it is satisfied by proof. "We think most of them opted in" loses. "Every number here has a consent record, or a register check dated within the last 21 days" wins. Make evidence the default and the risk takes care of itself.
Homework

Before session a4 ◐ 30 min total

★ Questions to ask your DPO and marketing team this week
  1. Before every marketing send, do we ask "is this a specified message?" first - and who decides?
  2. For our listed-number sends, do we rely on consent or a register check, and can we produce the evidence?
  3. Are our register-check confirmations always under 21 days old at the moment we send, not the old 30?
  4. Do any of our service or transactional messages carry a promotion that turns them into marketing?
  5. Who owns the DNC check, and would they survive an audit of one recent campaign?
Source material

Official sources covered

Taught from the PDPC's published guidelines - not marketing material. This page covers:

✓PDPC · Advisory Guidelines on the Do Not Call ProvisionsParts 1 & 2 · the three registers, the check-before-send duty, and specified messages
✓PDPA · the check-before-send duty and 21-day validity (s.43)Part 1 · current since 1 Feb 2021; the stale 30-day figure retired
◐PDPA · Eighth Schedule (excluded message types)Part 2 · transactional, B2B, ongoing relationship, emergency, research, personal
Check yourself

Three questions before you go 🎯 ◐ 90 seconds

1 · A register check confirming a number is not listed is valid for...

The old 30-day figure is stale. Since 1 Feb 2021 a check-before-send confirmation is valid for 21 days.

2 · Before the DNC register rules apply at all, the first question to ask is...

If a message is not a specified message - for example a receipt or a B2B note - the DNC registers do not apply to it at all.

3 · A person's Singapore number is on the No Text Message register. You may still text them a promotion if...

Clear consent overrides listing. The register protects people who have not agreed to hear from you; genuine consent means they have.

Leader session 3 cheat sheet · pin this

Three registersNo Voice Call, No Text Message, No Fax Message. Numbers checked against all three at once.
Singapore number8 digits starting 3, 6, 8, or 9. Non-SG numbers are outside the registers.
The core dutyBefore marketing to a SG number: hold clear consent, or a register check confirming it is not listed.
21 days, not 30A register-check confirmation is valid for 21 days (since 1 Feb 2021). The 30-day figure is stale.
Consent overridesClear, unambiguous consent lets you message even a listed number.
Specified messageMarketing: promote goods, services, land, or a business/investment opportunity. Purpose is the test.
Ask this firstIs it a specified message? If no, DNC does not apply. If yes, then consent-or-check.
Excluded messagesTransactional/service, B2B, ongoing relationship, emergency, market research, personal (Eighth Schedule).