Sparrow SMS

WhatsApp Business API — Send Notifications, OTPs & Campaigns at Scale | Sparrow SMS
Official Meta Technology Provider badge — Sparrow SMS Official Meta Technology Provider

The Smarter Way to Connect with Customers on WhatsApp

Sparrow SMS is an official Meta Technology Provider giving businesses direct access to the WhatsApp Business API — send automated notifications, run marketing campaigns, verify users with OTP, and manage customer conversations at any scale.

500+
Businesses Served
98%
Message Open Rate
2B+
WhatsApp Users Globally

Trusted by leading brands across South Asia

Daraz — uses Sparrow SMS WhatsApp Business API Enterprise client of Sparrow SMS WhatsApp API Royal Enfield Nepal — WhatsApp notifications by Sparrow SMS Daraz e-commerce WhatsApp messaging Nepal Royal Enfield Nepal WhatsApp Business API

Real-World Impact

Built for the Way Modern Businesses Communicate

Whether you are sending a delivery alert, collecting a payment, or qualifying a sales lead — see how teams across industries use the WhatsApp Business API to make every message count.

Keep Customers Informed at Every Step of Delivery

Customers who know where their order is are customers who trust you. Automate every touchpoint — from dispatch to doorstep — and eliminate the calls, complaints, and confusion that come with silence.

  • Automated dispatch and out-for-delivery notifications
  • Live GPS tracking link shared directly via WhatsApp
  • Delivery confirmation with proof-of-delivery photo
  • Failed delivery rescheduling handled by chatbot
Get Started — Free Demo
Order Dispatched

Hi Rahul! Your package from Daraz is on its way. Estimated delivery: Today, 4–7 PM. Track: bit.ly/track123

Out for Delivery

Your rider Shyam is 2 km away. Reply DELAY to reschedule or OK to confirm your slot.

Reschedule Delivery

Financial Alerts That Actually Reach Your Customers

SMS has a delivery problem. WhatsApp does not. Send transaction alerts, EMI reminders, and account updates through a channel your customers check within minutes — not hours.

  • Real-time debit and credit transaction notifications
  • Loan and EMI due-date reminders with payment links
  • KYC verification status updates delivered instantly
  • Fraud alerts with one-tap action buttons
Schedule a Demo
Transaction Alert

Rs. 15,000 debited from your account ending 4521. Balance: Rs. 42,300. Not you? Call 1800-XXX immediately.

EMI Reminder

Your home loan EMI of Rs. 28,500 is due in 3 days.

Pay Now

Turn Abandoned Carts into Completed Purchases

Most abandoned carts are not lost — they are just waiting for the right nudge. Reach customers where they spend their time and bring them back with personalised, timely messages they will actually read.

  • Abandoned cart recovery campaigns
  • Flash sale and discount broadcasts to opted-in customers
  • Order status updates and post-purchase review requests
  • Product catalog sharing directly inside WhatsApp
Talk to Sales
Cart Recovery

Sita, you left something behind. Your cart holds Rs. 4,200 worth of items. Use code COME10 for 10% off — valid 24 hours only.

Complete My Purchase

OTP Delivery That Does Not Let Your Users Down

A failed OTP is a failed login — and a frustrated user. Switch to a channel with near-perfect delivery rates, end-to-end encryption by default, and a familiar interface your customers already trust.

  • Instant OTP delivery via WhatsApp in under 3 seconds
  • Account verification and two-factor authentication
  • Login alerts and suspicious activity warnings
  • Simple REST API — integrate and go live in under 10 minutes
Get API Keys
Security Code

Your verification code is 847291. Valid for 10 minutes. Never share this with anyone.

// Send OTP — Sparrow REST API POST /v1/whatsapp/send { "to": "+977-98XXXXXXXX", "template": "otp_verification" }

Run Campaigns on the Channel with the Highest Engagement

Email open rates hover around 20%. WhatsApp sits at 98%. If you are serious about reaching your audience, the channel choice matters more than the message itself.

  • Bulk broadcast campaigns to opted-in contacts
  • 24/7 AI lead qualification chatbot
  • Click-to-WhatsApp ads integration with Meta
  • Seamless sales team handoff with CRM sync
Start Campaigning
Exclusive Offer

Namaste! As a valued customer, you get early access to our Winter Sale — up to 40% off. Shop before it goes public tomorrow.

Shop the Sale

More Industries We Serve

View All Industries
Healthcare & Clinics Travel & Hospitality Education & EdTech Real Estate + More Industries

Built for Everyone

One Platform.
Two Ways In.

Your engineering team gets a clean, well-documented API integration. Your marketing and support teams get a dashboard they can use from day one — no handoff required.

For Developers

A REST API Built the Way You Expect It.

Well-structured endpoints, predictable responses, and documentation that does not require a support ticket to understand. Get from sandbox to production in hours, not days.

  • RESTful API for sending WhatsApp messages, OTPs, and alerts
  • Webhook support for real-time message delivery events
  • Postman collection and sandbox for testing before going live
  • Node.js, PHP, and Python code samples ready to use
  • 99.9% uptime SLA backed by a live status dashboard
# Send a WhatsApp message via Sparrow curl -X POST https://api.sparrowsms.com/whatsapp/send \ -H "Authorization: Bearer YOUR_TOKEN" \ -d '{"to":"977980000000","template":"order_update"}'

For Business Teams

Run Campaigns Without Waiting on Engineering.

Your marketing and support teams should not need a developer to send a campaign or respond to a customer. Our dashboard puts full control in their hands from day one.

  • Drag-and-drop WhatsApp chatbot builder with logic flows
  • One-click broadcast campaigns to segmented contact lists
  • Visual WhatsApp message template designer and approval tracker
  • Shared team inbox for managing customer support conversations
  • Campaign analytics — open rates, click-throughs, and response rates

See the dashboard in action

The Real Difference

What Changes When You Make the Switch

The gap between businesses using the WhatsApp Business API and those still relying on SMS is widening every quarter. Here is what that gap looks like in practice.

Without WhatsApp API

Where most businesses are stuck today

SMS messages ignored — average 20% open rate
No rich media — just plain unformatted text
Support teams overwhelmed with manual replies
Customers wait hours for a response
No automation — every message sent by hand
Zero visibility into who read your messages
Lost revenue from slow or missed follow-ups

With Sparrow WhatsApp API

Where your business operates from day one

98% message open rate — WhatsApp notifications are read, not ignored
Send images, PDFs, interactive buttons, carousels and videos
WhatsApp chatbot handles 70% of queries automatically, around the clock
Instant automated WhatsApp responses — no delays, no manual effort
Full message automation with triggers, flows and approved templates
Real-time delivery receipts and read status per message
Close deals faster with in-chat payment links and two-way messaging

Full Feature Set

Everything You Need, Nothing You Do Not

We built Sparrow's WhatsApp Business API platform to solve real business problems — from bulk messaging and automated notifications to chatbot automation and CRM integration. Here is what is included from day one.

📢

Broadcast Campaigns

🤖

Chatbot Automation

📋

Template Messages

👥

Team Shared Inbox

📊

Analytics and Reports

🔗

CRM and API Integration

Green Tick Verification

🌐

Multi-Language Support

🔒

Secure OTP Delivery

Simple Onboarding

From Sign-Up to Live in Six Steps

Getting access to the WhatsApp Business API is more straightforward than most businesses expect. We handle Meta verification, template approvals, and API configuration — so you can focus on what you want to send.

Step 01

Submit Your Request

Tell us about your business and your messaging goals — whether that is sending transactional alerts, running WhatsApp marketing campaigns, or building a customer support chatbot.

Step 02

Facebook Business Verification

We guide you through verifying your Facebook Business Manager — a one-time requirement from Meta that unlocks full access to the WhatsApp Business API.

Step 03

Choose Your WhatsApp Number

Get a dedicated business number or port your existing one. This becomes your verified WhatsApp sender — the number customers will see on every message you send.

Step 04

Create and Submit Message Templates

WhatsApp requires pre-approved templates for outbound messaging. We write and submit them on your behalf — designed for fast approval and high engagement.

Step 05

Connect via REST API or Dashboard

Integrate WhatsApp messaging directly into your existing stack using our REST API, or use our no-code dashboard to launch your first broadcast campaign without writing a line of code.

Step 06 — Go Live

Launch, Measure, and Scale

Send your first automated WhatsApp message or campaign. Our team stays with you post-launch to help you optimise delivery, open rates, and customer response.

Why Sparrow SMS

Why Businesses Choose Sparrow Over the Alternatives

There are many WhatsApp Business API providers. Here is why over 500 businesses chose Sparrow SMS — and stayed.

🏆

Direct Accreditation from Meta

Sparrow SMS is an Official Meta Technology Provider — not a third-party reseller. That means your WhatsApp Business API access is more stable, compliant, and directly supported by Meta's infrastructure.

🌎

A Team That Stays With You

Onboarding is just the beginning. Our team supports you from template approval to sending your first million WhatsApp messages — and every scale milestone after that.

Live in Days, Not Weeks

Most clients are sending automated WhatsApp notifications within 5 to 7 business days. We manage Meta verification and template submissions end to end, so you never get stuck waiting.

💰

Usage-Based Pricing With No Fine Print

Pay for what you send — whether that is a handful of OTPs or millions of broadcast messages. No minimum commitments, no hidden platform fees, and no lock-in contracts.

Talk to Our Team

WhatsApp Business API — The Numbers That Matter

98%
Average open rate for WhatsApp messages vs. 20% for email — making it the highest-performing customer messaging channel available
2B+
Active WhatsApp users across 180+ countries — the world's most widely used messaging platform for both personal and business communication
5x
Higher click-through rates on WhatsApp broadcast campaigns vs. traditional SMS — source: Gartner
500M+
Businesses globally use WhatsApp to send automated notifications, support messages, and marketing campaigns every day

Client Stories

What Businesses Say After Going Live

Real results from businesses that switched to the WhatsApp Business API through Sparrow SMS.

40%
Fewer Tickets
★★★★★

We were spending hours every day answering the same questions over and over. Three weeks after going live, our support volume dropped by 40%. The automation handles the repetitive work — our team now only steps in when a conversation genuinely needs them.

BP
Bikash Pradhan
Head of Customer Operations, E-Commerce Platform
22%
Better Collection
★★★★★

Our EMI reminder campaigns on SMS were being ignored. We switched to WhatsApp through Sparrow and saw a 22% improvement in collection rates within the first billing cycle. The difference in how customers engage on WhatsApp versus any other channel is night and day.

SR
Sabina Rajbhandari
VP Digital Channels, Financial Services
94%
Open Rate
★★★★★

I expected the setup to take weeks. It took six days. Sparrow handled the Meta verification, the template approvals, everything. Our first campaign went out and hit a 94% open rate. That number alone justified the switch.

NM
Niraj Maharjan
Marketing Director, Retail Chain

FAQ

Common Questions, Straight Answers

Everything businesses ask before getting started with the WhatsApp Business API.

The free WhatsApp Business app works fine for a single person managing a handful of conversations. The API is an entirely different product — designed for businesses that need to send thousands of messages, manage multiple agents from one inbox, build automated workflows, and connect messaging to their existing systems like CRMs and ERPs. It runs server-to-server, which means there is no phone, no app to keep open, and no message limit that will stop you as you grow.

Most businesses are live within 5 to 7 business days. The main variable is Facebook Business Manager verification — if yours is already verified, WhatsApp Business API access can be provisioned even faster. We handle template submissions and guide you through every step, so there are no surprise delays or back-and-forth with Meta on your end.

Yes — Meta requires explicit opt-in for any outbound business-initiated message. In practice, this is a good thing: it means every person you reach has already shown interest, which is why open rates sit around 98%. Customers who message you first do not require a separate opt-in. We help you set up compliant opt-in collection through your existing website or customer touchpoints.

Yes. The API supports transactional messages — things like order confirmations, OTPs, and payment alerts — as well as marketing messages including promotions, re-engagement campaigns, and product launches. Marketing messages require a pre-approved template and can only go to users who have opted in. We help you write and submit templates that get approved quickly and are designed to drive real results.

Yes. All messages are end-to-end encrypted by default — the same encryption WhatsApp applies to personal conversations. As an Official Meta Technology Provider, Sparrow SMS operates within Meta's full compliance framework. We provide data processing agreements for enterprise customers and maintain a 99.9% uptime SLA on our infrastructure.

Get Started with Sparrow SMS

Your Customers Are Already on WhatsApp.
Is Your Business?

Over 500 businesses trust Sparrow SMS to power their customer conversations via the WhatsApp Business API. Get a free consultation and find out how quickly you can go live.

No credit card required  ·  Full onboarding support  ·  Live within 5–7 business days