Under the Full SSIR Regime, any organisation that wishes to send SMS messages with alphanumeric Sender IDs to Singapore mobile subscribers must first register their Sender IDs with the SSIR. All non-registered Sender IDs will be marked as “Likely-SCAM”. Organisations (including organisations with branches based overseas) are advised to register their accounts in the
SSIR portal and submit their preferred Sender ID(s) early in order to avoid any disruption to their SMS communications with their customers.