Important Update: TRAI Mandates New SMS Header Format

Important Update: TRAI Mandates New SMS Header Format

Hello everyone,
We have an announcement regarding a new regulation by the Telephone Regulatory Authority of India (TRAI) that affects all application-to-person (A2P) SMS services. Starting on May 6, 2025, TRAI has mandated that telecom service providers in India append a suffix to the SMS sender header based on the type of message being delivered. Aimed at improving transparency, this change will impact how your SMS is displayed in the recipient's inbox.

What is the change?

According to TRAI's latest regulation, the sender header section of all A2P SMS messages must include a suffix that will convey the type of message being delivered. Below are the suffixes and their respective categories:
  • P: Promotional messages
  • S: Service messages
  • T: Transactional messages
  • G: Government-authorized messages
For example, if your SMS header read JD-ZYLKER previously, after the change it will read XY–ZYLKER–P, where XY is the operator and circle code, and P stands for promotional message.

Who does the regulation affect?

This change affects A2P SMS services. This means that if you're using bulk SMS to send promotional, transactional, or customer service alerts, this will affect the way your message header is displayed to your recipients.

What is the purpose of this regulation?

Through this regulation, TRAI aims to:
  • Improve transparency and user experience by displaying the SMS type.
  • Reduce spam and fraudulent messages.
  • Standardize SMS headers to monitor messages more effectively. 

How will it affect businesses?

This change will only affect the way message headers are displayed to your recipients. Businesses are not expected to add the suffix manually or change their existing SMS marketing practices. The suffix will be automatically included in the SMS header by the telecom service provider during the DLT scrubbing based on the type of SMS you're sending.
 
Best regards,
Team Zoho Campaigns


      • Sticky Posts

      • Tip of the week 03 - Sending emails in batches

        Today's marketers not only want their email marketing to be efficient, but also smart. For an email campaign, you may think you have all the essential elements for lead conversion—a big mailing list, an attractive template design, and the most-engaging message content, but after hitting the ‘send’ button, you may not get the expected conversions. Wondering why? Here’s one of the major reasons. Many marketers miss out on sending the email campaign the right way. Did you know that you should not be

      • Tip of the week 04 - Know about your recipients' 'prime open time.'

        In today's market, the importance of customer behavior is astounding, with a vast amount of research and resources going into finding how customers make decisions. The process of persuading your customers to open your email and click on your call-to-action becomes easy when you understand the psychology behind their behavioral traits. Time to turn into a psychologist! Let's get to the basics—you want your emails to resonate well with your recipients. So, what's the primary thing involved here? It's

      • Zoho Campaigns Expert Diaries on SoundCloud, Spotify, Apple Podcasts, and YouTube

        Hi email champs,  As email marketers, we find great lessons in each other's works—be it the subject lines that worked good, the design that was received well, or the CTA that had the maximum clicks. Email marketing encompasses a wide variety of topics spanning everything from creation and design to development and deliverability.  Here's when we from the Zoho Campaigns team found the need to build an email marketing community comprising of seasoned marketers and email geeks who can help each other

      • Email Deliverability Tip #3: Seal the deal with the preheader

        In the last post, we learned about the subject line. Today we'll be learning about the preheader. A preheader is the short text that follows the subject line in an email. The preheader is designed to hint at what your email message is all about. A good preheader should act as a second subject line and convince your contacts to open the email. Now, let's learn the best way to craft a preheader. Your subject line and preheader should work together and accurately convey the gist of your email. Keep

      • Tip of the week 15 - Add subscription-preferences option. Drive more engagement.

        If crafting content for emails, getting creatives done, and running email campaigns is your love, then unsubscribes are the heartbreakers.  You can save your emails from being unsubscribed/trashed by adding a proper subscription-preferences option in your emails (works best at the time of signup). Giving subscribers the option to choose what they want to receive from you and decide how often (frequency of the emails) your emails should hit their inboxes will increase the reach of your campaigns manifolds. 

        • Recent Topics

        • How get stock name from other column ?

          How get stock name from other column ? e.g. =STOCK(C12;"price") where C12 is the code of the stock

        • Adding a developer for editing the client application with a single user license

          Hi, I want to know that I as a developer I developed one application and handed over to the customer who is using the application on a single user license. Now after6 months customer came back to me and needs some changes in the application. Can a customer

        • Archiving Contacts

          How do I archive a list of contacts, or individual contacts?

        • Download an email template in html code

          Hello everyone, I have created an email template and I want to download it as html. How can i do that? I know you can do it via the campaigns-first create a campaign add the template and download it as html from there. But what if i don't want to create

        • Attachment is not included in e-mails sent through Wordpress

          I have a Wordpress site with Zeptomail Wordpress plugin installed and configured. E-mails are sent ok through Zeptomail but without the included attachment (.pdf file) Zeptomail is used to send tickets to customers through Zeptomail. E-Mails are generated

        • Upcoming Changes to the Timesheet Module

          The Timesheet module will undergo a significant change in the upcoming weeks. To start with, we will be renaming Timesheet module to Time Logs. This update will go live early next week. Significance of this change This change will facilitate our next

        • Best way to schedule bill payments to vendors

          I've integrated Forte so that I can convert POs to bills and make payments to my vendors all through Books. Is there a way to schedule the bill payments as some of my vendors are net 30, net 60 and even net 90 days. If I can't get this to work, I'll have

        • Cant update image field after uploading image to ZFS

          Hello i recently made an application in zoho creator for customer service where customers could upload their complaints every field has been mapped from creator into crm and works fine except for the image upload field i have tried every method to make

        • Billing Management: #4 Negate Risk Free with Advances

          In the last post, we explored how unbilled charges accumulate before being invoiced. But what happens when businesses need money before service begins? Picture this: A construction company takes on a $500,000 commercial building project expected to last

        • CRM templates

          Hello everyone, In my company we use Zoho campaigns where we set up all newsletters and we use Zoho CRM for transactional emails. I have created some templates in Zoho campaigns but from my understanding i cannot use those in Zoho CRM, right?

        • Is there an equivalent to the radius search in RECRUIT available in the CRM

          We have a need to find all Leads and/or Contacts within a given radius of a given location (most likely postcode) but also possibly an address. I was wondering whether anyone has found a way to achieve this in the CRM much as the radius search in RECRUIT

        • Zoho CRM Inventory Management

          What’s the difference between Zoho CRM’s inventory management features and Zoho Inventory? When is it better to use each one?

        • Cannot Enable Picklist Field Dependency in Products or Custom Modules – Real Estate Setup

          Hello Zoho Support, I am configuring Zoho CRM for real estate property management and need picklist field dependency: What I’ve tried: I started by customizing the Products module (Setup > Modules & Fields) to create “Property Type” (Housing, Land, Commercial)

        • How to add application logo

          I'm creating an application which i do not want it to show my organization logo so i have changed the setting but i cannot find where to upload/select the logo i wish to use for my application. I have seen something online about using Deluge and writing

        • Get Workflow Metadata via API

          Is there a way to get metadata on workflows and/or custom functions via API? I would like to automatically pull this information. I couldn't find it in the documentations, but I'm curious if there is an undocumented endpoint that could do this. Moderation

        • Zoho Projects - Q2 Updates | 2025

          Hello Users, With this year's second quarter behind us, Zoho Projects is marching towards expanding its usability with a user-centered, more collaborative, customizable, and automated attribute. But before we chart out plans for what’s next, it’s worth

        • FSM setup

          So we have been tinkering with FSM to see if it is going to be for us. Now is the time to bite the bullet and link it to our zoho books and zoho crm. The help guides are good but it would really help if they were a bit more in depth on the intergrations.

        • Upcoming Updates to the Employees Module in Zoho Payroll (US)

          We've made a couple of updates to the Employees module in Zoho Payroll (latest version of the US edition). These changes will go live today. While creating an employee Currently, the Compensation Details section is part of the Basic Details step, where

        • Possible to Turn Off Automatic Notifications for Approvals?

          Hello, This is another question regarding the approval process. First a bit of background: Each of our accounts is assigned a rank based on potential sales. In Zoho, the account rank field is a drop-down with the 5 rank levels and is located on the account

        • ZOHO Creator subform link

          Dear Community Support, I am looking for some guidance on how to add a clickable link within a Zoho Creator subform. The goal is for this link to redirect users to another Creator form where they can edit the data related to the specific row they clicked

        • Allow Resource to Accept or Reject an Appointment

          I have heard that this can be done, is there any documentation on how?

        • Converting Sales Order to Invoice via API; Problem with decimal places tax

          We are having problems converting a Sales Order to an Invoice via API Call. The cause of the issue is, that the Tax value in a Sales Order is sometimes calculated with up to 16 decimal places (e.g. 0.8730000000000001). The max decimal places allowed in

        • Create new Account with contact

          Hi I can create a new Account and, as part of that process, add a primary contact (First name, last name) and Email. But THIS contact does NOT appear in Contacts. How can I make sure the Contact added when creating an Account is also listed as a Contact?

        • Custom Fonts in Zoho CRM Template Builder

          Hi, I am currently creating a new template for our quotes using the Zoho CRM template builder. However, I noticed that there is no option to add custom fonts to the template builder. It would greatly enhance the flexibility and branding capabilities if

        • Python - code studio

          Hi, I see the code studio is "coming soon". We have some files that will require some more complex transformation, is this feature far off? It appears to have been released in Zoho Analytics already

        • Sync desktop folders instantly with WorkDrive TrueSync (Beta)

          Keeping your important files backed up and accessible has never been easier! With WorkDrive desktop app (TrueSync), you can now automatically sync specific desktop folders to WorkDrive Web, ensuring seamless, real-time updates across devices. Important:

        • How To Insert Data into Zoho CRM Organization

          Hi Team I have this organization - https://crm.zoho.com/crm/org83259xxxx/tab/Leads I want to insert data into this Leads module, what is the correct endpoint for doing so ? Also I have using ZohoCRM.modules.ALL scope and generated necessary tokens.

        • Where can I get Equation Editor por Zoho Writer?

          I need to use Math Formulas in my document. Thank you.

        • How can I get base64 string from filecontent in widget

          Hi, I have a react js widget which has the signature pad. Now, I am saving the signature in signature field in zoho creator form. If I open the edit report record in widget then I want to display the Signature back in signature field. I am using readFile

        • Creator roadmap for the rest of 2022

          Hi everyone, Hope you're all good! Thanks for continuing to make this community engaging and informative. Today we'd like to share with you our plans for the near future of Creator. We always strive to strike a good balance of features and enhancements

        • CRM x WorkDrive: File storage for new CRM signups is now powered by WorkDrive

          Availability Editions: All DCs: All Release plan: Released for new signups in all DCs. It will be enabled for existing users in a phased manner in the upcoming months. Help documentation: Documents in Zoho CRM Manage folders in Documents tab Manage files

        • Filtering repport for portal users

          Salut, I have a weird problem that I just cannot figure out : When I enter information as administrator on behalf of a "supplier" portal user (in his "inventory" in a shared inventory system), I can see it, "customer" portal users can see it, but the

        • Zoho Inventory. Preventing Negative Stock in Sales Orders – Best Practices?

          Dear Zoho Inventory Community, We’re a small business using Zoho Inventory with a team of sales managers. Unfortunately, some employees occasionally overlook stock levels during order processing, leading to negative inventory issues. Is there a way to

        • Integración Books para cumplir la ley Crea y Crece y Ley Antifraude (VeriFactu)

          Hola: En principio, en julio de 2025, entra en vigor la ley Crea y Crece y Ley Antifraude (VeriFactu). ¿Sabéis si Zoho va a cumplir con la ley para cumplir con la facturación electrónica conectada a Hacienda? Gracias

        • Zoho One - Syncing Merchants and Vendors Between Zoho Expense and Zoho Books

          Hi, I'm exploring the features of Zoho One under the trial subscription and have encountered an issue with syncing Merchant information between Zoho Expense and Zoho Books. While utilizing Zoho Expense to capture receipts, I noticed that when I submit

        • Is Zoho Sheet available for Linux ?

          Is Zoho Sheet available for Linux ?

        • Offline support for mobile app

          Accessing your files and folders from your mobile devices is now quicker and simpler, thanks to the power of offline support. Whether on an Android or iOS device, you can use the Offline function to save files and folders, so you can review them even

        • Zoho Sheet for Desktop

          Does Zoho plans to develop a Desktop version of Sheet that installs on the computer like was done with Writer?

        • Create static subforms in Zoho CRM: streamline data entry with pre-defined values

          Last modified on (9 July, 2025): This feature was available in early access and is currently being rolled out to customers in phases. Currently available for users in the the AU, CA, and SA DCs. It will be enabled for the remaining DCs in the next couple

        • BUTTONS SHOWN AS AN ICON ON A REPORT

          Hi Is there any way to create an action button but show it as an icon on a report please? As per the attached example? So if the user clicks the icon, it triggers an action?

        • Next Page