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ITU-T X.1238 (12/2025)

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Guidelines for countering spam over rich communication service (RCS) messaging
Rich communication service (RCS) messaging is the evolution of mobile messaging. End users benefit from no longer needing to download multiple apps. Instead, they can engage with businesses from within the messaging app itself.
Recommendation ITU-T X.1238 specifies guidance and technical enablers supporting RCS providers to prevent spam distribution based on RCS specificities and defines spam prevention and control mechanisms supported by the RCS client.
This Recommendation quotes the RCS architecture as defined by the GSM Association (GSMA) and focuses on how to mitigate spam risks of RCS messaging.
Citation: https://handle.itu.int/11.1002/1000/16482
Series title: X series: Data networks, open system communications and security
  X.1200-X.1299: Cyberspace security
  X.1230-X.1249: Countering spam
Approval date: 2025-12-11
Provisional name:X.sgc-rcs
Approval process:TAP
Status: In force
Maintenance responsibility: ITU-T Study Group 17
Further details: Patent statement(s)
Development history
[18 related work items in progress]