Is two-way SMS supported in Singapore?

No, two-way SMS is not supported in Singapore.

Can I send multimedia messages (MMS) in Singapore?

No, MMS is converted to SMS with an embedded URL in Singapore.

What happens if I send an SMS to a landline number?

You cannot send SMS to landline numbers in Singapore. The Sent REST API will throw a 400 response, and the message will not be delivered.

What is the mobile country code for Singapore?

The mobile country code for Singapore is 525.

Is two-way SMS supported in Singapore?

No, two-way SMS is not supported in Singapore.

Can I send SMS messages to landline numbers in Singapore?

No, sending SMS messages to landline numbers in Singapore is not allowed and will result in a 400 error code.

What happens if I use a non-registered Sender ID in Singapore?

Non-registered Sender IDs will be overwritten with ‘Likely-SCAM’ from 30 January 2023.

Are concatenated SMS messages supported in Singapore?

Yes, concatenated messages are supported, but they may not work with certain sender ID types.

What is the maximum length for an SMS message in Singapore?

The maximum length for an SMS message in Singapore is 160 ASCII characters.

Is MMS supported in Singapore?

MMS is not fully supported in Singapore; MMS messages are converted to SMS with an embedded URL.

Do I need to register my Sender ID for SMS campaigns in Singapore?

Yes, you must register Alphanumeric, Shortcode, and Domestic Longcode Sender IDs with the Singapore Network Information Centre (SGNIC).

Are international longcode Sender IDs allowed in Singapore?

No, international longcode Sender IDs cannot be registered in Singapore.

What types of content are prohibited in SMS messages in Singapore?

Prohibited content includes firearms, gambling, adult material, money/loans, political or religious topics, controlled substances, cannabis, alcohol, and links to messaging apps like WhatsApp or LINE.

What are the best practices for SMS campaigns in Singapore?

Best practices include obtaining opt-in consent, respecting daytime hours, supporting HELP/STOP commands, and avoiding do-not-call registries.

What is the dialing code for Singapore?

The dialing code for Singapore is +65.

Why is it important to register a Sender ID in Singapore?

Registering a Sender ID is important to comply with regulations and avoid messages being marked as 'Likely-SCAM'.

Can I send SMS messages at any time of the day in Singapore?

It is best to limit SMS messages to daytime hours unless the message is urgent.

What should I do if my SMS campaign involves prohibited content?

Avoid including prohibited content in your SMS campaigns to comply with Singapore's regulations.

What happens if I send an SMS to a do-not-call number in Singapore?

You should avoid sending SMS to do-not-call numbers to comply with regulations and avoid penalties.

How can I ensure my SMS messages are compliant in Singapore?

Ensure compliance by registering your Sender ID, avoiding prohibited content, and following best practices such as obtaining opt-in consent.

What is the consequence of not complying with SMS regulations in Singapore?

Non-compliance can result in penalties and your messages being marked as 'Likely-SCAM'.

Where can I find more information about SMS regulations in Singapore?

You can find more information on the Singapore Network Information Centre (SGNIC) website.

Are there any specific commands I should support in my SMS campaigns in Singapore?

Yes, you should implement standard HELP/STOP commands in the recipient’s local language.

SMS Guidelines for Singapore: Compliance, Message Length, and Best Practices

Discover essential SMS guidelines for Singapore, focusing on compliance, message length, and best practices to enhance your mobile communication strategy effectively.

Locale Overview

In Singapore, the mobile country code is 525, and the country’s dialing code is +65. These codes are crucial for setting up your SMS campaigns to ensure messages reach the correct destination.

Two-Way SMS and Number Portability

Two-Way SMS: Not supported in Singapore.
Number Portability: Available, allowing users to retain their mobile numbers when switching carriers.

Message Length and Concatenation

Maximum Message Length: 160 ASCII characters.
Concatenated Messages: Supported but may not work with certain sender ID types.

MMS Support

MMS: Not fully supported. MMS messages are converted to SMS with an embedded URL linking to the multimedia content.

Sending SMS to Landline Numbers

Sending SMS to landline numbers is not allowed. Attempting to do so will result in a 400 error code (21614) from the Sent REST API, and the message will not be logged or charged.

Compliance and Regulatory Considerations

Sender ID Registration: All Alphanumeric, Shortcode, and Domestic Longcode Sender IDs must be registered with the Singapore Network Information Centre (SGNIC).
International Longcode Sender IDs: Cannot be registered.
Non-Registered Sender IDs: From 30 January 2023, these will be overwritten with ‘Likely-SCAM’.
Content Restrictions: Prohibited content includes firearms, gambling, adult material, money/loans, political or religious topics, controlled substances, cannabis, alcohol, and messaging apps links like WhatsApp or LINE.

Best Practices for SMS Campaigns in Singapore

Obtain Opt-In Consent: Ensure explicit consent from users before sending messages.
Respect Daytime Hours: Limit messages to daytime unless urgent.
Support HELP/STOP Commands: Implement standard commands in the recipient’s local language.
Avoid Do-Not-Call Registries: Do not contact users on do-not-call or do-not-disturb lists.

Conclusion

Adhering to SMS guidelines in Singapore is vital for successful messaging campaigns. Register your Sender ID, comply with content regulations, and follow best practices to avoid penalties and ensure message delivery.

For more detailed information, visit the Singapore Network Information Centre (SGNIC) website.