---
title: "SMS Sender ID Suffix for India"
description: "Starting May 6, 2025, all SMS Sender IDs will include a message-type suffix as per the new TRAI rules. This will help recipients identify the type of SMS they’re receiving (Promotional, Service, etc.)."
url: https://help.zixflow.com/en/articles/96-sms-sender-id-suffix-for-india
collection: "SMS Campaigns"
updated: 2025-06-04
language: en
---

# SMS Sender ID Suffix for India

Starting May 6, 2025, all SMS Sender IDs will include a message-type suffix as per the new TRAI rules. This will help recipients identify the type of SMS they’re receiving (Promotional, Service, etc.).

## What’s Changing?

Your SMS Sender ID will now include a **2-letter suffix** based on the type of message you’re sending.  
This change is **automatic** and handled by your DLT platform and telecom provider.

### Example:

If your Sender ID is `ZIXMSG` and you send a service message, it will appear as:  
**VM-ZIXMSG-S**  
Where:

-   `VM` = Operator code
    
-   `ZIXMSG` = Your registered Sender ID
    
-   `-S` = Suffix showing the message type
    

* * *

## 🏷 Suffix Types

<table data-id="6143b0fe-b4f0-414b-83d1-5192ba9bed33" style="min-width: 75px;"><colgroup><col style="min-width: 25px;"><col style="min-width: 25px;"><col style="min-width: 25px;"></colgroup><tbody><tr><td colspan="1" rowspan="1"><p data-id="ef9294ac-1ce5-4bfb-8675-78965649a7e8" style="text-align: left;"></p></td><td colspan="1" rowspan="1"><p data-id="b07250d5-4ba3-471d-a109-3e36776c09b7" style="text-align: left;"></p></td><td colspan="1" rowspan="1"><p data-id="ec9068a3-9747-4106-9c5a-038e12bcc5d1" style="text-align: left;">Message TypeSuffixExample</p></td></tr><tr><td colspan="1" rowspan="1"><p data-id="eec1adaa-1edf-42fd-8f4b-4bcaf3ec4435" style="text-align: left;">Promotional</p></td><td colspan="1" rowspan="1"><p data-id="5d6150a4-dd5a-4e27-87da-b4db587ff2b0" style="text-align: left;">P</p></td><td colspan="1" rowspan="1"><p data-id="1683de6d-c5c4-4f77-a5c1-a964cff74232" style="text-align: left;">ZIXMSG-P</p></td></tr><tr><td colspan="1" rowspan="1"><p data-id="103fcca6-b543-46de-9f29-298a4cc0ecff" style="text-align: left;">Service (Implicit)</p></td><td colspan="1" rowspan="1"><p data-id="0af3233a-9540-4981-b543-448d00ddcdc1" style="text-align: left;">S</p></td><td colspan="1" rowspan="1"><p data-id="9da74728-0dd9-4298-856b-31784831a20c" style="text-align: left;">ZIXMSG-S</p></td></tr><tr><td colspan="1" rowspan="1"><p data-id="54ee5be0-bac9-459b-a2c7-081a985500ad" style="text-align: left;">Transactional (OTPs, etc.)</p></td><td colspan="1" rowspan="1"><p data-id="5348031b-834d-4079-be60-cbd37be23703" style="text-align: left;">T</p></td><td colspan="1" rowspan="1"><p data-id="54d3b517-b388-4b42-84fd-5e77c3a00815" style="text-align: left;">ZIXMSG-T</p></td></tr><tr><td colspan="1" rowspan="1"><p data-id="2d7b6259-28f4-4ddb-86dd-d95e07d24fe7" style="text-align: left;">Government (Exempted)</p></td><td colspan="1" rowspan="1"><p data-id="07d12c8c-eae3-4bba-a5de-65568c902497" style="text-align: left;">G</p></td><td colspan="1" rowspan="1"><p data-id="9cd3691c-f199-4839-9e96-508a1477085d" style="text-align: left;">ZIXMSG-G</p></td></tr></tbody></table>

> 📌 “Service Explicit” messages will now be treated as **Promotional** and get the `-P` suffix.

* * *

## ✅ Do You Need to Do Anything?

Everything is handled by your DLT platform and Zixflow.

-   Your templates and headers stay the same.
    
-   The suffix will be added automatically.
    
-   You don’t need to make any changes.