---
title: "Sender ID registration in Singapore"
description: "Register an SMS sender ID in Singapore: IMDA rules, about 19 calendar days, opt-out wording, alphanumeric formats and rejection reasons. We file it for you."
canonical: "https://omnichannels.ai/sender-id/singapore/"
language: "en"
updated: "2026-10-01"
publisher: "BroadNet Technologies"
brand: "OmniChannels.ai"
---

# Sender ID registration in Singapore

Canonical: https://omnichannels.ai/sender-id/singapore/
Language: en
Publisher: OmniChannels.ai by BroadNet Technologies

**Short answer:** Yes. Sender ID registration is required in Singapore (SGNIC SMS Sender ID Registry (SSIR); the organisation registers and selects its Participating Aggregators). Approval typically takes about 19 calendar days (SGNIC). Alphanumeric IDs of up to 11 characters are accepted. OmniChannels.ai prepares the application with you and confirms current rules during onboarding.

## Sender ID rules at a glance

| Item | Details |
|---|---|
| Regulator | Infocomm Media Development Authority (IMDA) |
| Registration required | Required (SGNIC SMS Sender ID Registry (SSIR); the organisation registers and selects its Participating Aggregators) |
| Typical lead time | About 19 calendar days (SGNIC) |
| Alphanumeric sender ID | Yes (Latin letters, up to 11 characters) |
| Numeric long code / short code | Not listed for this market; alphanumeric is the documented format |
| Accepted formats | Alphanumeric, up to 11 characters |
| Promotional sending hours | No regulator-published window found (Agree sending hours with the operator and schedule promotional sends for the recipient's local daytime; transactional traffic runs 24/7.) |
| Opt-in | Verifiable opt-in required, with traffic categorised by use case at the time of registration. DLT-style template approval applies in several markets. |
| Opt-out | STOP keyword and DND-registry suppression applied automatically. Records retained per regulator requirements. |
| Operators we reach | Singtel, StarHub and M1 |
| Last reviewed | 1 October 2026 (Sources: IMDA, SGNIC SSIR, SGNIC SSIR FAQ) |

Official sources: [IMDA](https://www.imda.gov.sg/), [SGNIC SSIR](https://www.sgnic.sg/smsregistry/overview), [SGNIC SSIR FAQ](https://www.sgnic.sg/faq/sms-sender-id-registry)

## How to register your sender ID in Singapore through OmniChannels.ai

1. **Choose and check your sender ID:** Pick a sender ID that matches your brand: Latin letters, up to 11 characters. Test it in the free sender ID checker first.
2. **Send us your company details and use case:** Tell us the legal entity, brand and what each sender ID will send (OTP, transactional or promotional). We confirm which supporting documents are currently needed.
3. **We prepare the application with you:** We prepare the application and the details the registry asks for. Current process in Singapore: SGNIC SMS Sender ID Registry (SSIR); the organisation registers and selects its Participating Aggregators.
4. **Approval and test messages:** Approval typically takes about 19 calendar days (SGNIC). Once approved we send test messages on Singtel, StarHub and M1 and check the sender ID displays correctly.
5. **Go live:** Send through the REST API, SMPP or campaigns. Schedule promotional sends for the recipient's local daytime. Opt-out handling is applied to every promotional message.

## Common reasons a sender ID is rejected in Singapore

- Too long: sender IDs here are up to 11 characters.
- Generic words instead of a brand, such as INFO, SMS, OTP, ALERT: regulators usually refuse them.
- Arabic, accented or other non-Latin letters: this market lists Latin letters only.
- Spaces or symbols such as _ & ! ( ): many operators strip or refuse them; use a hyphen or nothing.

## Sender ID in Singapore: questions

### Do I need to register a sender ID in Singapore?

Yes. SGNIC SMS Sender ID Registry (SSIR); the organisation registers and selects its Participating Aggregators. We prepare the application with you and confirm the current requirements during onboarding.

### How long does sender ID registration take in Singapore?

Typically about 19 calendar days (SGNIC), depending on the registry and the documents provided. We confirm the current timeline for your sender ID during onboarding.

### Can I use an alphanumeric sender ID in Singapore?

Yes. Alphanumeric sender IDs are accepted: Latin letters, up to 11 characters. Accepted formats: Alphanumeric, up to 11 characters.

### When can I send promotional SMS in Singapore?

There is no regulator-published window that we know of in Singapore. Agree sending hours with the operator and schedule promotional sends for the recipient's local daytime; transactional traffic runs 24/7.

### What consent and opt-out rules apply in Singapore?

Verifiable opt-in required, with traffic categorised by use case at the time of registration. DLT-style template approval applies in several markets. STOP keyword and DND-registry suppression applied automatically. Records retained per regulator requirements.

### Who regulates SMS sender IDs in Singapore?

Infocomm Media Development Authority (IMDA), together with the mobile operators (Singtel, StarHub and M1). Official sources: IMDA, SGNIC SSIR, SGNIC SSIR FAQ.

## Related

- [Sender ID checker for Singapore](https://omnichannels.ai/tools/sender-id-checker/?country=SG)
- [SMS pricing in Singapore](https://omnichannels.ai/sms-pricing/singapore/)
- [Register your sender ID](https://omnichannels.ai/contact/)

Last reviewed 2026-10-01. Rules are confirmed during onboarding.