Reach every customer's phone with bulk SMS.
Send promotional offers, transactional alerts and OTPs instantly to thousands of customers, with fast delivery, DLT compliance and real-time reports.
Bulk SMS Services that delivers results
SMS still reaches almost every mobile phone in India, with or without internet. Zap-Pass provides bulk SMS services in India for businesses that need to send offers, order updates, payment reminders and one-time passwords quickly and reliably.
We help you complete TRAI DLT registration, set up sender IDs and approve message templates, so your messages are compliant and delivered without blocks. Send campaigns from an easy web panel, upload contact lists, personalise messages and schedule them, or connect our SMS API to your website, app or CRM for automatic alerts and OTPs. Combine SMS with the WhatsApp Business API for richer two-way conversations.
Our bulk sms services services
Everything you need, delivered by one experienced team.
Promotional SMS
Offers, launches and event invites sent to opted-in customers.
Transactional SMS
Order confirmations, delivery updates and account alerts, delivered fast.
OTP SMS
Secure one-time passwords for login and payment verification.
DLT registration support
Help with entity, header and template registration.
SMS API
Send messages automatically from your website, app or CRM.
Live delivery reports
Track sent, delivered and failed messages in real time.
Why businesses choose our bulk sms services
We combine technical expertise with a clear focus on your business goals.
- High delivery ratesDirect operator routes for fast, reliable delivery.
- Fully compliantDLT-ready setup that follows TRAI rules.
- Regional languagesSend messages in Hindi and other Indian languages.
- Easy to useSimple panel for campaigns, scheduling and reports.
How we deliver
Consult
Understand your audience, use cases and message volumes.
Day 1Setup & compliance
Accounts, sender IDs, DLT templates and numbers configured.
Day 2–7Integrate
Connect with your website, CRM and apps via API.
Week 1–2Launch & report
Go live with delivery reports and ongoing support.
Go liveTools and platforms we use
Bulk SMS Services FAQs
What is DLT registration and do I need it?
DLT is a TRAI requirement for businesses sending commercial SMS in India. You register your company, sender ID (header) and message templates. We guide you through the whole process.
What is the difference between promotional and transactional SMS?
Promotional SMS carries offers and marketing messages and can only be sent to customers who haven't blocked such messages. Transactional SMS carries essential information like OTPs, order updates and alerts and is delivered at any time.
Can I send SMS from my own software?
Yes. Our SMS API lets your website, app or CRM send messages automatically, such as OTPs and order alerts.
Can I send SMS in Hindi?
Yes. Unicode SMS supports Hindi and other Indian languages.
Related services
Serving clients across India and around the world
We work with businesses nationwide and internationally through calls, video meetings and shared project tools.
Let's discuss your bulk sms project
Get a free consultation and a fixed quote within one working day.