Bulk SMS is a business messaging service that sends one text message to a large number of mobile numbers at the same time, through a web panel or an SMS API. Businesses use it for offers, alerts, OTPs, reminders and notifications.
You upload your contact list or connect via API, choose a DLT-approved sender ID and template, and send. The SMS gateway routes messages to telecom operators (Jio, Airtel, Vi, BSNL), which deliver them to handsets and return delivery reports.
At SMSGatewayHub, promotional bulk SMS starts from ₹0.12 per SMS and Service/OTP and transactional SMS start from ₹0.18 per SMS. The final rate depends on volume and route; GST is extra. See
promotional and
transactional pricing.
Yes. Under TRAI's TCCCPR rules (2018, amended 2025), every business sending commercial SMS in India must register its entity, sender IDs (headers) and message templates on a DLT platform. Unregistered messages are blocked by operators.
DLT registration guide.
Promotional SMS carries offers and marketing content, shows a -P suffix, is delivered only between 10 AM and 9 PM, and is blocked for DND numbers unless the customer has given recorded digital consent. Service SMS (-S) carries OTPs and updates for your own customers, and Transactional SMS (-T) carries bank transaction alerts and OTPs; both are delivered 24x7, including to DND numbers.
Promotional SMS is not delivered to DND-registered numbers unless the customer has given recorded digital consent to your brand. Service Implicit (-S), Transactional (-T) and Government (-G) messages are delivered to DND numbers, as long as they contain no promotional content.
Under TRAI's TCCCPR 2025 amendment, operators add a suffix to every commercial SMS header to show its category: -P for Promotional, -S for Service, -T for Transactional and -G for Government. The suffix is added automatically based on your DLT template category, so you don't need to re-register your header.
No. Service Explicit has been discontinued as a DLT category. New Service Explicit templates can't be registered, and existing ones were moved to the Promotional category, so they now follow promotional rules: -P suffix, 10 AM to 9 PM delivery, and DND blocking unless recorded consent exists.
Promotional SMS can be delivered only between 10 AM and 9 PM. Messages submitted outside this window are rejected by the DLT system (error 651) instead of being queued. Service, Transactional and Government SMS can be sent 24x7.
One SMS holds 160 characters in English (GSM) or 70 characters in Unicode languages like Hindi. Longer messages are split into parts of 153 or 67 characters and each part is billed as one SMS.
Yes. SMSGatewayHub supports Unicode SMS, so you can send messages in Hindi, Marathi, Gujarati, Tamil, Telugu, Bengali, Punjabi and other Indian languages.
Most messages reach handsets within a few seconds. Live delivery speed and uptime are published on
status.smsgatewayhub.com.
Yes. SMSGatewayHub offers HTTP/REST SMS APIs,
SMPP connectivity and plugins for WordPress, WooCommerce and Excel, so you can send SMS from any website, app, CRM or ERP.
View API docs.
Yes. You can
register for free and receive test credits to try the panel and API before buying a plan.
SMSGatewayHub has been a bulk SMS provider in India since 2009, is ISO 9001:2015 and ISO 27001 certified, TRAI DLT compliant, offers direct operator routes, a developer-friendly API, DLT registration help and 24x7 support.