Specify your SMS fallback sender when sending RCS messages
Twilio adds FallbackFrom parameter for RCS message SMS/MMS fallback sender control Twilio has introduced a new FallbackFrom parameter in its Messages API that allows developers to specify which SMS or MMS sender number should be used when RCS message delivery fails. Previously, Twilio automatically selected fallback senders, but this update enables granular control over fallback routing. The FallbackFrom sender must exist within the same account SID but doesn't need to be part of the Messaging Service's sender pool. This feature is particularly useful for organizations wanting fallback messages from specific numbers or enabling different fallback numbers per department, store, or representative while maintaining a single RCS sender representing the brand.
EUM / SES Relevance
Relevant to AWS EUM as it demonstrates advanced RCS fallback capabilities and sender management features that EUM should consider for competitive parity in multi-channel messaging orchestration and sender reputation management.
Key Takeaways
- arrow_right_alt New FallbackFrom parameter allows explicit specification of SMS/MMS fallback sender for failed RCS messages
- arrow_right_alt Fallback sender must be in the same account SID but can exist outside the Messaging Service's sender pool
- arrow_right_alt Enables per-department, per-store, or per-representative fallback routing while maintaining unified RCS branding
- arrow_right_alt Replaces automatic fallback sender selection with developer-controlled routing logic