{"id":16494,"date":"2026-05-03T20:09:52","date_gmt":"2026-05-03T14:39:52","guid":{"rendered":"https:\/\/www.fast2sms.com\/help\/?p=16494"},"modified":"2026-05-03T20:09:52","modified_gmt":"2026-05-03T14:39:52","slug":"send-free-dlt-sms-with-api-access","status":"publish","type":"post","link":"https:\/\/www.fast2sms.com\/help\/send-free-dlt-sms-with-api-access\/","title":{"rendered":"Send Free DLT SMS with API access"},"content":{"rendered":"<section class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [&amp;:has([data-writing-block])&gt;*]:pointer-events-auto [content-visibility:auto] supports-[content-visibility:auto]:[contain-intrinsic-size:auto_100lvh] R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:aa509dac-155a-4d6a-837b-41d1a3cf1e9d-0\" data-testid=\"conversation-turn-2\" data-scroll-anchor=\"false\" data-turn=\"assistant\">\n<div class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\">\n<div class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\">\n<div class=\"flex max-w-full flex-col gap-4 grow\">\n<div class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+&amp;]:mt-1\" dir=\"auto\" data-message-author-role=\"assistant\" data-message-id=\"9fbf0d47-7bf3-4676-a6ad-78abb6e2250c\" data-turn-start-message=\"true\" data-message-model-slug=\"gpt-5-3\">\n<div class=\"flex w-full flex-col gap-1 empty:hidden\">\n<div class=\"markdown prose dark:prose-invert w-full wrap-break-word light markdown-new-styling\">\n<p style=\"text-align: justify\" data-start=\"0\" data-end=\"326\" data-is-last-node=\"\" data-is-only-node=\"\">As you are aware, <span class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"><span class=\"whitespace-normal\">Telecom Regulatory Authority of India<\/span><\/span> (TRAI) regulations have made it mandatory for every business to register on the <a href=\"https:\/\/www.fast2sms.com\/help\/what-is-dlt-in-bulk-sms\/\">DLT platform<\/a> before sending SMS to customers. Now you can easily signup with <a href=\"http:\/\/fast2sms.com\">Fast2SMS<\/a> and <strong>send free SMS with API access<\/strong> to your customers instantly and hassle-free.<\/p>\n<p style=\"text-align: justify\" data-start=\"0\" data-end=\"326\" data-is-last-node=\"\" data-is-only-node=\"\">In this article, we will learn what is DLT SMS, understand the process of sending free DLT SMS with API access, learn about Fast2SMS features and explore more useful details. So, continue reading.<\/p>\n<p>&nbsp;<\/p>\n<\/div>\n<\/div>\n<p data-start=\"0\" data-end=\"326\" data-is-last-node=\"\" data-is-only-node=\"\"><a href=\"https:\/\/www.fast2sms.com\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-12818\" src=\"https:\/\/www.fast2sms.com\/help\/wp-content\/uploads\/2024\/01\/bulk-sms-service-1.png\" alt=\"bulk-SMS-service-signup\" width=\"800\" height=\"99\" srcset=\"https:\/\/www.fast2sms.com\/help\/wp-content\/uploads\/2024\/01\/bulk-sms-service-1.png 510w, https:\/\/www.fast2sms.com\/help\/wp-content\/uploads\/2024\/01\/bulk-sms-service-1-300x37.png 300w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h2 style=\"text-align: center\"><strong>What is DLT SMS?<\/strong><\/h2>\n<p style=\"text-align: justify\">Distributed Ledger Technology or <strong>DLT<\/strong> is a blockchain based system started by Telecom Regulatory Authority of India (TRAI) to reduce the problem of unsolicited and spam messages. As per TRAI guidelines, every business (Principal Entity) has to register on a DLT platform to continue sending SMS to their clients. Also, every Sender ID (Header) and Message text (Content template) have to be first approved on the DLT portal before they get sent.<\/p>\n<p style=\"text-align: center\"><strong>Types of DLT SMS<\/strong><\/p>\n<ul>\n<li><em>Promotional message category:<\/em> These are messages sent for marketing and advertising purposes such as offers, discount coupons, etc.<\/li>\n<li><em>Service Implicit message category:<\/em> These are messages that are informative in nature other than OTP such as order updates, alerts, shipment details, etc.<\/li>\n<li><em>Service Explicit message category<\/em>: These are promotional messages sent to registered customers after receiving their consent such as event offers, coupon, etc.<\/li>\n<li><em>Transactional message category<\/em>: These are OTP messages used by Banks for sending one time passwords to their users.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><strong><a href=\"https:\/\/www.fast2sms.com\/notice\/\">Click here<\/a> to know more about DLT SMS<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h2 style=\"text-align: center\"><strong>Why use Fast2SMS to send free DLT SMS with API access?<\/strong><\/h2>\n<div class=\"text-base my-auto mx-auto [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\">\n<div class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\">\n<div class=\"flex max-w-full flex-col gap-4 grow\">\n<div class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+&amp;]:mt-1\" dir=\"auto\" data-message-author-role=\"assistant\" data-message-id=\"f26520d4-756b-43e6-92ce-2ed0b7d89781\" data-message-model-slug=\"gpt-5-3\">\n<div class=\"flex w-full flex-col gap-1 empty:hidden\">\n<div class=\"markdown prose dark:prose-invert w-full wrap-break-word light markdown-new-styling\">\n<p style=\"text-align: justify\" data-start=\"59\" data-end=\"366\">With over 15 years of messaging experience and more than 5 million registered clients, <strong>Fast2SMS<\/strong> is a trusted name in the field of bulk SMS messaging. We understand business communication needs and provide reliable solutions for smooth SMS delivery. Let us know the reasons for choosing us for your <a href=\"https:\/\/www.fast2sms.com\/help\/steps-add-details-fast2sms-dlt-sms-section\/\">DLT SMS<\/a> needs.<\/p>\n<h3 style=\"text-align: justify\" data-section-id=\"1bgspq\" data-start=\"368\" data-end=\"391\">1. Free DLT Support<\/h3>\n<p style=\"text-align: justify\" data-start=\"393\" data-end=\"670\">Unlike many SMS providers that charge high fees for support and query resolution, we assist our customers completely free. Customers are our top priority, and we always try to serve them in the best possible way. Our team is ready to guide you in every step of the DLT process. You can call us on 6262778822 for any query or help.<\/p>\n<h3 style=\"text-align: justify\" data-section-id=\"4gel5x\" data-start=\"672\" data-end=\"696\">2. No Purchase Limit<\/h3>\n<p style=\"text-align: justify\" data-start=\"698\" data-end=\"951\">Our affordable pricing plans have made us a popular SMS provider in India. There is no restriction on buying a fixed SMS pack. You can start with just Rs. 100 and begin sending SMS easily. You can also test our services free after signup on our website.<\/p>\n<h3 style=\"text-align: justify\" data-section-id=\"1lodbyk\" data-start=\"953\" data-end=\"979\">3. No Monthly API Cost<\/h3>\n<p style=\"text-align: justify\" data-start=\"981\" data-end=\"1215\">We always try to make the bulk SMS journey easy for our customers. There are no monthly charges or setup fees for sending SMS through in Fast2SMS via API. While many providers charge extra amounts, we offer API setup and installation completely free.<\/p>\n<h3 style=\"text-align: justify\" data-section-id=\"w3u5u9\" data-start=\"1217\" data-end=\"1239\">4. Simple API Docs<\/h3>\n<p style=\"text-align: justify\" data-start=\"1241\" data-end=\"1480\" data-is-last-node=\"\" data-is-only-node=\"\">You do not need technical knowledge or programming expertise to use our API. Fast2SMS API documents are simple and easy to understand, making SMS sending smooth and hassle-free experience for everyone. If you need help, our support team is always available to assist you.<\/p>\n<p data-start=\"1241\" data-end=\"1480\" data-is-last-node=\"\" data-is-only-node=\"\">\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>&nbsp;<\/p>\n<h2 style=\"text-align: center\"><strong>Comparison between Fast2SMS and other DLT SMS Providers<\/strong><\/h2>\n<div><\/div>\n<div>\n<table style=\"border-collapse: collapse;width: 100%\">\n<tbody>\n<tr>\n<td style=\"width: 50%;text-align: center\"><strong>Fast2SMS<\/strong><\/td>\n<td style=\"width: 50%;text-align: center\"><strong>Other DLT SMS Providers<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 50%\"><span style=\"color: #339966\">Free DLT support<\/span><\/td>\n<td style=\"width: 50%\"><span style=\"color: #ff0000\">Support with charges<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 50%\"><span style=\"color: #339966\">No purchase limit<\/span><\/td>\n<td style=\"width: 50%\"><span style=\"color: #ff0000\">SMS Packs mandatory<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 50%\"><span style=\"color: #339966\">Most affordable pricing<\/span><\/td>\n<td style=\"width: 50%\"><span style=\"color: #ff0000\">Pricing high with addons<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 50%\"><span style=\"color: #339966\">Simple API docs<\/span><\/td>\n<td style=\"width: 50%\"><span style=\"color: #ff0000\">Complex API docs<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 50%\"><span style=\"color: #339966\">Dedicated support via call, email and chat<\/span><\/td>\n<td style=\"width: 50%\"><span style=\"color: #ff0000\">Lack of personalised support<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div><\/div>\n<p>&nbsp;<\/p>\n<h2 style=\"text-align: center\"><strong>Features of Fast2SMS<\/strong><\/h2>\n<ul>\n<li>Simple API docs<\/li>\n<li>Instant delivery<\/li>\n<li>Free DLT support<\/li>\n<li>Cost-effective charges<\/li>\n<li>User friendly interface<\/li>\n<li>Easy signup process<\/li>\n<li>Free credit after every signup<\/li>\n<li>No purchase limit<\/li>\n<li>Lowest SMS price<\/li>\n<li>Call support<\/li>\n<li>Chat support<\/li>\n<li>Email support<\/li>\n<li>No API charges<\/li>\n<li>Fastest message delivery<\/li>\n<li>Quick SMS route<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2 style=\"text-align: center\"><strong>How to send free DLT SMS with API access via Fast2SMS?<\/strong><\/h2>\n<p style=\"text-align: justify\">Make sure you have followed the complete process of Principal Entity registration in DLT, Header submission and approval and content template submission and approval. Once all these details are approved by the DLT panel, submit them into Fast2SMS for approval and once they get approved you can now begin sending DLT SMS with API access.<\/p>\n<p style=\"text-align: justify\">1. Login into Fast2SMS account. In the DLT SMS section, the following screen will get displayed.<\/p>\n<p><a href=\"https:\/\/www.fast2sms.com\/help\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-02-at-11.38.47-PM.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-16500\" src=\"https:\/\/www.fast2sms.com\/help\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-02-at-11.38.47-PM.png\" alt=\"DLT SMS sending process\" width=\"1266\" height=\"558\" srcset=\"https:\/\/www.fast2sms.com\/help\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-02-at-11.38.47-PM.png 1266w, https:\/\/www.fast2sms.com\/help\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-02-at-11.38.47-PM-300x132.png 300w, https:\/\/www.fast2sms.com\/help\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-02-at-11.38.47-PM-1024x451.png 1024w, https:\/\/www.fast2sms.com\/help\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-02-at-11.38.47-PM-768x339.png 768w\" sizes=\"(max-width: 1266px) 100vw, 1266px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify\">2. Select Dev API from the left panel. Once you select it, the following screen will be displayed. Here, APIs of all your approved templates in DLT will appear.<\/p>\n<p><a href=\"https:\/\/www.fast2sms.com\/help\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-02-at-11.46.20-PM.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-16501\" src=\"https:\/\/www.fast2sms.com\/help\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-02-at-11.46.20-PM.png\" alt=\"Dev API for sending DLT SMS\" width=\"1266\" height=\"663\" srcset=\"https:\/\/www.fast2sms.com\/help\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-02-at-11.46.20-PM.png 1266w, https:\/\/www.fast2sms.com\/help\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-02-at-11.46.20-PM-300x157.png 300w, https:\/\/www.fast2sms.com\/help\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-02-at-11.46.20-PM-1024x536.png 1024w, https:\/\/www.fast2sms.com\/help\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-02-at-11.46.20-PM-768x402.png 768w\" sizes=\"(max-width: 1266px) 100vw, 1266px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify\">3. Select the Method between GET and POST, select DLT SMS in the Route field, then select the Sender ID. Then select the Template. <strong>Note: The templates which are approved within the particular Sender ID will appear here.\u00a0<\/strong><\/p>\n<p><a href=\"https:\/\/www.fast2sms.com\/help\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-02-at-11.53.14-PM.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-16502\" src=\"https:\/\/www.fast2sms.com\/help\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-02-at-11.53.14-PM.png\" alt=\"DLT SMS API sending\" width=\"1266\" height=\"663\" srcset=\"https:\/\/www.fast2sms.com\/help\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-02-at-11.53.14-PM.png 1266w, https:\/\/www.fast2sms.com\/help\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-02-at-11.53.14-PM-300x157.png 300w, https:\/\/www.fast2sms.com\/help\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-02-at-11.53.14-PM-1024x536.png 1024w, https:\/\/www.fast2sms.com\/help\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-02-at-11.53.14-PM-768x402.png 768w\" sizes=\"(max-width: 1266px) 100vw, 1266px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify\">4. All the parameters that have to be pushed will be available on the Overall URL link. We have given you the complete URL that you need to just hit to send the SMS.<\/p>\n<p style=\"text-align: justify\">You need to just search on Google how to hit GET API in PHP, Python or Javascript (Whatever is your programming language). You only need to change the mobile number and the variable values if any. Rest, the link will remain same. Once you hit the message, Fast2SMS will receive all the details and send the SMS. The following message will appear on your screen once the message is sent successfully as shown in the image below.<\/p>\n<p style=\"text-align: justify\"><a href=\"https:\/\/www.fast2sms.com\/help\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-03-at-12.02.46-AM.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-16503\" src=\"https:\/\/www.fast2sms.com\/help\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-03-at-12.02.46-AM.png\" alt=\"Message sent successfully\" width=\"1306\" height=\"347\" srcset=\"https:\/\/www.fast2sms.com\/help\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-03-at-12.02.46-AM.png 1306w, https:\/\/www.fast2sms.com\/help\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-03-at-12.02.46-AM-300x80.png 300w, https:\/\/www.fast2sms.com\/help\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-03-at-12.02.46-AM-1024x272.png 1024w, https:\/\/www.fast2sms.com\/help\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-03-at-12.02.46-AM-768x204.png 768w\" sizes=\"(max-width: 1306px) 100vw, 1306px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h2 style=\"text-align: center\"><strong>DLT SMS FAQs<\/strong><\/h2>\n<p><strong>Q<\/strong>: What is the full form of DLT?<\/p>\n<p><strong>A<\/strong>: DLT stands for Distributed Ledger Technology<\/p>\n<p><strong>Q<\/strong>: Is DLT mandatory?<\/p>\n<p><strong>A<\/strong>: Yes, it is mandatory for sending SMS<\/p>\n<p><strong>Q<\/strong>: Why DLT registration is required?<\/p>\n<p><strong>A<\/strong>: It is required to solve the issue of spam and fraudulent SMS cases and bring transparency in the Bulk SMS industry.<\/p>\n<p><strong>Q<\/strong>: What are DLT message categories?<\/p>\n<p><strong>A<\/strong>: Transactional, Service Implicit, Service Explicit and Promotional<\/p>\n<p><strong>Q<\/strong>: What is Principal Entity?<\/p>\n<p><strong>A<\/strong>: It is the business or company that is sending Bulk SMS to their clients.<\/p>\n<p><strong>Q<\/strong>: Who is the regulator of DLT platform?<\/p>\n<p><strong>A<\/strong>: TRAI is the regulator of DLT platform.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify\">In conclusion, we can say that <strong>sending free DLT SMS with API access<\/strong> is easy with <strong><a href=\"http:\/\/fast2sms.com\">Fast2SMS<\/a><\/strong> services. You can test our service for free after signup. <strong><a href=\"https:\/\/api.whatsapp.com\/send\/?phone=916262778822&amp;text=Need+Help&amp;type=phone_number&amp;app_absent=0\">Call on 6262778822<\/a> <\/strong>for any support or query. <strong>Signup now<\/strong> and begin your journey to bulk SMS messaging.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>As you are aware, Telecom Regulatory Authority of India (TRAI) regulations have made it mandatory for every business to register on the DLT platform before sending SMS to customers. Now you can easily signup with Fast2SMS and send free SMS with API access to your customers instantly and hassle-free. In this article, we will learn [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,13],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Send Free DLT SMS with API access<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.fast2sms.com\/help\/send-free-dlt-sms-with-api-access\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Send Free DLT SMS with API access\" \/>\n<meta property=\"og:description\" content=\"As you are aware, Telecom Regulatory Authority of India (TRAI) regulations have made it mandatory for every business to register on the DLT platform before sending SMS to customers. Now you can easily signup with Fast2SMS and send free SMS with API access to your customers instantly and hassle-free. 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