Singapore: SMS Guidelines

Sending SMS to Singapore? Check out our comprehensive guidelines to ensure compliance in Singapore.

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Written by Telnyx Engineering
Updated over a week ago

Singapore: SMS Guidelines

MCC: 525
Dial Code: 65

Mandatory registration of Alphanumeric Sender IDs has been implemented by the Infocomm Media Development Authority (IMDA) since January 31st, 2023.

From this date and until July 31st, 2023, all submissions with un-registered Alphanumeric Sender IDs will be flagged and overwritten with "Likely-SCAM". After July 31st, 2023, messages with un-registered Alphanumeric Sender IDs will be blocked.

Kindly note that the registration of Alphanumeric Senders involves fees.

Please make sure to always refer to our Acceptable Use Policy for Messaging.

For more information on Alphanumeric Sender ID registration kindly reach out to

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