TRAI SMS Rules 2025: What Do ‘S’, ‘P’, ‘G’, and ‘T’ in message headers really mean?
Have you ever paid attention to the letters at the end of an SMS sender ID—like S, P, G, or T? If not, it’s time you do. The Telecom Regulatory Authority of India (TRAI) has implemented an SMS Suffix System for 2025 that makes these alphabets more than just letters — they’re key indicators…
