Plain-language definition
The name or number shown as the sender of an SMS.
Technical definition
The sender ID is the originating address (TON/NPI and digits or alphanumeric string) submitted by the ESME; operators may register, restrict or force it by policy.
Why it matters
Sender IDs carry brand trust, so spoofing and replacement are prime fraud vectors and key integrity checks in route testing.
Last reviewed 2026-09-12 by the Guardivia QoS Engineering Team. Product facts on this page describe current capabilities; items marked “where supported”, “optional”, “integration” or “consultancy” are confirmed per deployment.