Plain-language definition
A delivery path that bypasses the commercial terms an operator expects for commercial SMS.
Technical definition
Grey routes deliver A2P traffic via P2P interconnects, SIM boxes, unauthorised GTs or direct injection so that termination fees are avoided; they often alter sender IDs or content.
Why it matters
Grey routes are the main source of A2P revenue leakage and a common cause of altered or delayed OTPs.
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.