Do Singapore's Do Not Call Rules Apply to AI Voice Agent Calls?

Short answer: yes. The Personal Data Protection Act defines a "voice call" to include a call that involves a recorded or synthetic voice, so an AI voice agent that makes a marketing call to a Singapore number is covered by the Do Not Call (DNC) provisions. Before you send a marketing message, you must check the DNC Registry, unless the person has given clear and unambiguous consent in evidential form. The product gives you tools, but it does not check the Registry or collect consent for you. Read the official text; not legal advice.

Sources: the PDPC's Advisory Guidelines on the Do Not Call Provisions (revised 1 February 2021) and its Do Not Call leaflet for organisations, read on 25 October 2026.

What do the DNC provisions require?

Part 9 of the PDPA sets three duties for anyone who sends a "specified message" (in short, a marketing message) to a Singapore telephone number. Under section 43 you must have valid confirmation that the number is not on the relevant DNC register. Under section 44 the message must say who sent it and how to contact them. Under section 45, on a voice call you must not conceal or withhold your calling line identity. A Singapore telephone number, for these purposes, is an eight-digit number starting with 3, 6, 8 or 9.

There are three registers: the No Voice Call Register, the No Text Message Register and the No Fax Message Register. Results you receive from the Registry are valid for 21 days from receipt under the 2021 guidelines, so a list checked last month needs checking again before you ring it.

Does an AI voice count as a voice call?

The guidelines footnote the definition in section 36(1): a "voice call" includes a call that involves a recorded or synthetic voice. An AI agent speaks in a synthetic voice, so the safe reading is that the rules apply as they would to a person calling. The rules apply to WhatsApp, iMessage and Viber messages too, when they use a Singapore telephone number.

When can I skip the Registry check?

1. Clear and unambiguous consent, in evidential form. A web form where the person typed their number and asked for a call about a quote is the usual example. Keep the record: who, when, what they agreed to. The guidelines say the failure to opt out is not consent.
2. Messages that are not "specified messages". The guidelines list exclusions, such as a message whose sole purpose is to confirm a transaction the person agreed to, a message sent in an ongoing relationship whose sole purpose relates to it, market research, and messages sent to an organisation for that organisation's own purposes. Do not stretch these: if a call also tries to sell something new, it is not a confirmation.
3. Calls that are not marketing at all. Answering your own inbound call is not sending a marketing message, and a call that only serves a request the person made is generally not one either; ask your adviser where your own calls fall.

If a person withdraws consent, the guidelines give 21 days for you to act on it, and you must then check the Registry before contacting them again.

What about invented numbers?

Section 48B forbids sending messages to numbers produced by a dictionary attack or collected with address-harvesting software. The guidelines give an example that matters for automated dialling: generating possible eight-digit numbers and playing pre-recorded messages to them is a dictionary attack, even if you check each generated number against the Registry. An AI agent makes this easy to do by accident, so build your lists from people who gave you their number.

What does the platform do, and what does it not?

• Calling hours are set by you for each campaign, on the called person's clock. The platform sets no window of its own, and the guidelines we read state no Singapore calling hours, so set what your adviser tells you.
• A do-not-contact list that you keep. When someone says "stop", add them, and the campaign will not ring that number.
• The opening line is yours. Write it so the agent says who is calling, for which business and why, and offers to stop.
• A transcript of every call, which helps you show what was said.
• Not included: checking the DNC Registry, collecting consent, or telling you whether a particular call is a "specified message". Check the Registry yourself (overseas organisations can also open an account, according to the PDPC leaflet) and keep your own consent records.

What does this mean for a small business?

Most small businesses in Singapore do not need to cold call at all. The calls that create the most value are inbound ones that nobody answers, and replies to people who have already asked for a quote or an appointment. Start there: an AI receptionist for Singapore answers inbound calls in English, Mandarin, Malay or Tamil, and a follow-up call to a web-form lead who asked to be called rests on the consent they gave. Keep the form record. See the AI receptionist page for how the agent is set up and voice campaigns for the outbound tools.

We could not verify the penalties from the pages we read, so we state none. Ask your adviser about your own exposure.