Bulk SMS and WhatsApp That Actually Reach Every Indian Customer
Send DLT compliant Bulk SMS, WhatsApp, voice and email campaigns to customers in 500+ cities across India. With 230+ direct operator connections and 98-99% transactional delivery, your message lands where it matters - on time, every time.
One platform, every messaging channel
From bulk SMS to WhatsApp chatbots — pick a channel or combine them all.
Bulk SMS API
Developer-friendly REST API to send SMS, OTPs and alerts from your app, website or CRM.
ExploreOTP SMS Service
Sub-second OTP delivery on a dedicated transactional route with automatic failover.
ExploreWhatsApp Business API
Official WhatsApp Business API with green-tick verification, templates and team inbox.
ExploreWhatsApp Chatbot
24x7 automated WhatsApp chatbots that answer queries, qualify leads and take orders.
ExploreRCS Business Messaging
Branded, verified rich messages with cards, carousels and suggested replies on Google RCS.
ExploreMissed Call Service
Capture leads, opt-ins, votes and feedback with a free missed-call number.
ExploreIVR Service
Multi-level IVR menus, call routing and recordings for a professional caller experience.
ExploreEmail Marketing
Design, automate and track email campaigns with the Guru Mailer platform.
ExploreWhy 500+ Businesses Send With Guru SMS
Because a campaign is only as good as its delivery report. Here is what keeps clients with us year after year.
Delivery You Can Bank On
230+ direct operator connections and intelligent routing push every message through the fastest available path, so OTPs, alerts and offers arrive in seconds, not minutes.
DLT Compliance, Handled
Our team walks you through DLT registration, sender ID approval and template whitelisting end to end, so you stay on the right side of TRAI without the paperwork headache.
A Dashboard That Tells the Truth
Track delivery, clicks and replies in real time. Schedule campaigns, manage contacts, and download detailed reports that show exactly what worked and what needs fixing.
APIs Developers Actually Like
Clean REST APIs with sample code in PHP, Java, Python and more. Plug SMS, WhatsApp and OTP into your app or website in a single afternoon.
Support That Picks Up the Phone
Real people in Bhubaneswar, not ticket bots. Call, WhatsApp or email us and get answers from engineers who know your account and your campaigns.
Honest, Transparent Pricing
No hidden charges, no confusing slabs. You know exactly what every message costs before you hit send, and our quotes hold - in writing, every time.
Go Live in Four Simple Steps
Sign Up or Book a Demo
Create your free account in minutes, or ask for a guided demo. Tell us what you send and who you serve - we will suggest the right channels and plan.
Get DLT and Sender ID Sorted
We walk you through DLT registration, secure your sender ID and get your templates approved - handling the confusing parts so approvals never stall.
Launch Your Campaign
Upload contacts, personalise your message with names or order details, and send instantly - or schedule it for the moment your audience actually reads.
Track Results and Scale
Watch live delivery and click reports, see what your customers respond to, and put your budget behind the campaigns that prove themselves.
Built for Every Business That Talks to Customers
If you send OTPs, offers, reminders or updates, we have a route - and an approved template - ready for you.
Trusted From Cuttack to Mumbai
Serving 530+ cities — from metros to your mohalla
Deep roots in Odisha, delivery muscle everywhere. Find your city below.
Our home ground — Odisha
Straight Answers to Common Questions
What exactly is bulk SMS and how does it work?
Bulk SMS lets you send one message to thousands of mobile numbers at once - offers, OTPs, alerts or reminders. You upload your contact list to our platform or connect through our API, choose an approved template, and we deliver it over 230+ direct operator routes with live delivery reports for every number.
Do I really need DLT registration to send SMS in India?
Yes. TRAI requires every business sending commercial SMS to register on a DLT platform with an approved sender ID and message templates. It sounds tedious, but our team handles the process with you step by step, and most clients complete it within a few working days.
Is your WhatsApp service official?
We work on the official WhatsApp Business API from Meta - with verified business profiles, rich templates, chatbots and two-way conversations - alongside campaign tools for promotional outreach. For OTPs, order updates and customer support, the official API is the route we recommend, and we manage the Meta approval process for you.
Can I send messages in Odia, Hindi or other Indian languages?
Absolutely. Our platform supports Unicode messaging in Odia, Hindi, Bengali, Telugu, Tamil and every major Indian language. Regional language campaigns consistently draw stronger responses, especially outside the metros, and our team will gladly help you set up your first Unicode template.
How quickly can I start sending?
If your DLT registration is already in place, you can be sending within hours of signing up. Starting from scratch, plan for a few working days to complete DLT, sender ID and template approvals - we guide you through each step so nothing stalls.
What kind of support do you provide?
Real humans on phone, WhatsApp and email - reach us at +91-9853084604 or support@gurusms.in. From DLT paperwork to API debugging to campaign advice, you talk to people who work on the platform itself, not a call centre reading from a script.