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

    • New Series Announcement - Ecommerce Marketing Tips

      Running an online business is more than just having a website. It’s about getting the right customers to discover you, trust you, and keep coming back. To support your growth journey, we’re launching a weekly Marketing Tips series right here on Zoho Commerce
    • Marketing Tip #7: Add a blog to your online store

      A blog is more than content. It’s a magnet for new customers. Sharing product guides, styling tips, or industry insights through blog posts builds trust and helps you rank higher on search engines. Try this today: Write one blog post answering a common
    • Kanban view on Zoho CRM mobile app!

      What is Kanban? The name doesn't sound English, right? Yes, Kanban is a Japanese word which means 'Card you can see'. As per the meaning, Kanban in CRM is a type of list view in which the records will be displayed in cards and categorized under the given
    • Allow Regular Users to Directly Transfer Ownership of Files & Folders

      Hi Zoho WorkDrive Team, Hope you are doing well. We would like to request an important enhancement related to file and folder ownership management in Zoho WorkDrive. At the moment, a regular user cannot directly transfer ownership of their files or folders
    • STOCK history in zohosheets

      is it possible to get historical stock value using stock function in zoho sheets? i could not see from and to period in the helper document.
    • Customised Funnel

      We are running the standard plan for our ZOHO CRM. I have been asked if there is a way to combine data from the Calls module, Deals module and Contact Module into 1 funnel, similar to the view you can get when viewing Deals By Stages, you can see the
    • Trigger Zapier on Deluge Insert Into Function?

      Hello, To get around the limitation of not being able to trigger a Zapier Zap on Record Update(this would be extremely useful to be able to do btw), I have created a Deluge script to copy the data from Form A to a Trigger Form B using the Insert Into expression from a Custom Action button on a Report from Form A.  This action does not trigger the Zapier Zap whereas manually adding a record or duplicating an existing record does trigger the Zap. Is Insert Into not the same as a manual Add in the context
    • Can you inject JS in an HML+CSS+Deluge Page?

      I have an HTML + CSS + Deluge page and need just a little vanilla JS functionality. However, it seems like Zoho Creator does not allow that. I'm required to create a JS widget. Is this correct? If so: 1. Won't this quickly consume my API limit if there
    • Display Client Name in Zoho Creator Client Portal Dashboard

      Hello Zoho Creator Team, We hope you are doing well. Zoho Creator recently introduced the option to set a client’s display name in the Client Portal settings, which is very helpful for providing a personalized portal experience. However, there is currently
    • Creator HTML page refresh

      Hi, I have added around 5 different html snippets in single creator page. I understand, I can refresh the entire page from page script using Navigational URLs https://help.zoho.com/portal/en/kb/creator/developer-guide/others/url-patterns/articles/navigational-urls
    • Unified Inbox for all, including fetched mails

      I fetch mails from different third-parties mailboxes. But I need to switch mailbox too see fetched mails. It's strange. All mailboxes have one shared disk space for own mail and fetched mail, but why do we need to switch mailbox (on the left bottom) to
    • Introducing the all-new email parser!

      Greetings, We are pleased to introduce to you, a brand-new, upgraded version of the Zoho CRM Email Parser, which is packed with fresh features and has been completely redesigned to meet latest customers needs and their business requirements. On that note,
    • Samsung Keyboard Issues with Notebook

      Dear Users, We're sorry to inform you that some of our users are experiencing certain issues like scrolling, delay/lag, cursor placement especially within the text notes. This occurs mainly due to Samsung Keyboard compatibility with Android 13 and some
    • Marketer’s Space - Multi-Channel Campaigns for the Biggest Shopping Week with Zoho Marketing Automation

      Hello marketers, Welcome back to another post in Marketers Space! The biggest shopping week of the year is almost here, and it’s your moment to shine without the stress. With Black Friday and Cyber Monday just around the corner, being present across email,
    • Is there a problem with sharing workdrive files with links since last night?

      As per title, we can't access folders/files through share links since last night. I created ticket but we need quick solution and didn't hear back from the support yet. The files are still accessible by the main account but all zoho files that we are
    • Enable Screen Recording in Zoho WorkDrive Mobile Apps (Android & iOS)

      Hi Zoho WorkDrive Team, How are you? We are enthusiastic Zoho One users and rely heavily on Zoho WorkDrive for internal collaboration and content sharing. The screen-recording feature in the WorkDrive web app (similar to Loom) is extremely useful- however,
    • Production Management Tool (MRP / BOM)

      Hi Guys, is there any recommended App available that works with zoho and covers the needed applications for a production? What we need is a system that covers the BOM (bill of materials), MRP (material ressources planning), MRP II (manufacturing ressources
    • Function #53: Transaction Level Profitability for Invoices

      Hello everyone, and welcome back to our series! We have previously provided custom functions for calculating the profitability of a quote and a sales order. There may be instances where the invoice may differ from its corresponding quote or sales order.
    • Bug in Zoho Cliq Signup Flow – "%s" Placeholder Visible Instead of Product Name

      Hi Zoho Team, I would like to report a UI bug in the Zoho Cliq signup/enable flow. During the step where Cliq asks to enable the product for the company, the following text appears: Great! Your company is already available in Zoho, so you just have to
    • Zoho Invoice Customer Login Portal

      Are there any plans for a customer portal to Zoho Invoice, ala Freshbooks?  I would like customers that I invoice to be able to login to review invoices and invoice history.  I have not switched from Freshbooks for this very reason.
    • Exporting tickets

      I went to Setup -> Organization -> Import/Export in order to export tickets but found 2 issues: 1. The email body never gets exported. 2. There are some large numbers (like 5.57E+16) under certain columns of the exported CSV file. I could not find any export options. Please can you help with this?
    • Editing the Ticket Properties column

      This is going to sound like a dumb question, but I cannot figure out how to configure/edit the sections (and their fields) in this column: For example, we have a custom "Resolution" field, which parked itself in the "Ticket Information" section of this
    • Copy field information to clipboard

      I need to be able to transfer some field information in to the clipboard, so that I can then paste it in to our helpdesk system. Is there a way I could add a button to a detail report that does this?
    • Issuing reconciling a bank statement

      HELP! I'm trying to reconcile a bank statement. The prior month reconciled perfectly. Beginning balance is correct yet I'm off by the same amount each time. Both myself and my office manager, separately and together, have tried to complete this reconciliation
    • Correlated subqueries not supported in Zoho Analytics. This creates huge limitations

      Running into a major limitation in Zoho Analytics: correlated subqueries simply don’t work, even in completely standard SQL patterns inside a JOIN. Example: LEFT JOIN "Bills" b ON d."Id" = b."Deal ID" AND EXISTS ( SELECT 1 FROM "Bill
    • Unknown table or alias 'A1'

      I would like to create a subquery but i am getting the following error: Unknown table or alias 'A1' used in select query. This is the sql statement:  SELECT A1.active_paying_customers, A1.active_trial_customers, A1.new_paying_signup, date(A1.date_active_customers), 
    • Detect and ignore bots in visitors

      The SalesIQ visitor numbers are basically useless to us because there is no bot detection. We get the same bots coming in from the same countries looking at the same pages every day. It can't be that difficult to tell the difference between an actual
    • Add Real-Time Microphone Audio-Level Indicator During Screen Recording

      Hi Zoho WorkDrive Team, Hope you are doing well. We would like to request an important enhancement to the Zoho WorkDrive screen-recording experience. Current Limitation: During a recording session, there is no visual indication that the microphone is
    • Properly Capture Dropdowns & Hover Elements When Recording a Window/Tab

      Hi Zoho WorkDrive Team, Hope you are doing great. We encountered a limitation when recording a selected window or browser tab: Certain UI elements, such as dropdown lists, hover menus, and overlays, are not captured unless we record the entire screen.
    • Allow Recording Only a Selected Portion of the Screen

      Hi Zoho WorkDrive Team, Hope you are doing well. We would like to request a more flexible recording option in Zoho WorkDrive. At the moment, we can record either the entire screen or a specific window/tab — but not a custom selected portion of the screen
    • Add Camera Background Blur During Recording

      Hi Zoho WorkDrive Team, Hope everything is well. We would like to request an enhancement to the video recording feature in Zoho WorkDrive. Currently, the camera preview displayed during a recording does not support background blur. This is an essential
    • Make Camera Overlay & Recording Controls Visible in All Screen-Sharing Options

      Hi Zoho WorkDrive Team, Hope you are doing well. We would like to request an improvement to the screen-recording experience in Zoho WorkDrive. Current Limitation: At the moment the recording controls are visible only inside the Zoho WorkDrive tab. When
    • Allow Admins to Transfer Ownership of Their Own Files & Folders

      Hi Zoho WorkDrive Team, Hope you are doing well. We would like to request an important enhancement to the ownership-transfer functionality in Zoho WorkDrive, specifically regarding administrator capabilities. As administrators, we have the ability to
    • How to update custom multi-user field in Zoho Projects?

      I'm trying to update custom multi-user fields in Zoho Projects via a Deluge function in CRM. The code I have so far is below. It works for updating standard project fields and single-line custom fields, but it does not work to update multi-user fields.
    • Has Anyone successfully integrated Zoho and Sage Intact?

      Hey all, We’re evaluating Zoho One + Sage Intacct and I’m trying to connect with anyone who has actually implemented the two together.Specifically, I’d love to know: -- Which functions you kept in Zoho vs. Intacct (e.g., Product Catalog, AR/AP, invoicing,
    • Kaizen #57 - Mass Update API in Zoho CRM

      Hello everyone! Welcome back to yet another post in the Kaizen series. This week, we will discuss the Mass Update API in Zoho CRM. In this post, we will cover the following: 1. Introduction 2. Mass Update Records API  3. Schedule Update and Get Status
    • Zero Personalization of the File Sharing Experience

      By now (2025) this is the maximum level of personalization available for a Zoho sharing link. We gently asked Zoho if we could modify at least the background, and they replied that it cannot be customized. We're truly disappointed – and surprised every
    • 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
    • Canvas Flex Box containers should not require a width/height.

      Flexbox containers are often used as organizational concepts, to ease re-flow on mobile etc. - I cannot use % for flexbox W or H - I cannot omit W or H This means that the content cannot dictate, and a Flexbox container cannot be used merely as an organizational
    • Zoho / Outlook Calendar sync

      The current Marketplace -> Microsoft -> Meetings integration needs 2 changes. 1. The current language for the Two-Way sync option should be changed. It currently states, "Sync both your Zoho CRM Calendar and Office 365 Calendar meetings with each other."
    • Next Page