Official WhatsApp Business API, RCS & Bulk SMS Messaging | Advento Digital Solutions
Official WhatsApp Business API Β· RCS Β· Enterprise SMS

Every Channel.
One Inbox.
Messages That Convert.

Advento unifies the Official WhatsApp Business API, rich RCS messaging, and DLT-compliant bulk SMS into one platform β€” so every message reaches your customer on the richest channel available, at the lowest cost, automatically.

Official Meta BSP
DLT Registered
Smart Channel Routing
Unified Inbox
99.9% Delivery SLA
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Verified
Official Green Tick BSP
18,420 Sent Today
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SMS
160 CHAR Β· TEXT
Your OTP is 4821. Valid for 10 mins. Do not share β€” Advento.
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RCS
RICH CARD
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2BHK from β‚Ή42L β€” Ready to move
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99.9%
Message Delivery
98%
WhatsApp Read Rate
3 Channels
One Unified API
7 Days
To Go-Live
Verified
Official Green Tick
24Γ—7
Delivery Monitoring
WhatsApp Business API β€” Official & Verified β—† RCS Messaging β€” 45% Higher Read Rate β—† Bulk SMS β€” DLT Compliant β—† Smart Routing β€” Cheapest Channel First β—† Broadcast Campaigns β€” Millions Delivered β—† Chatbot Automation β€” 24Γ—7 Response β—† Template Approvals β€” Handled For You β—† Unified Analytics β€” Real-Time Reports β—† WhatsApp Business API β€” Official & Verified β—† RCS Messaging β€” 45% Higher Read Rate β—† Bulk SMS β€” DLT Compliant β—† Smart Routing β€” Cheapest Channel First β—† Broadcast Campaigns β€” Millions Delivered β—† Chatbot Automation β€” 24Γ—7 Response β—† Template Approvals β€” Handled For You β—† Unified Analytics β€” Real-Time Reports β—†
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SMS β€” Guaranteed Reach

Works on every phone, no internet needed. Your fallback that never fails to deliver.

Reach
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RCS β€” Rich & Verified

Images, buttons, and a verified sender badge β€” built natively into Android Messages.

Rich
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WhatsApp β€” Full Conversation

Catalogs, quick replies, and two-way chat on India's most-used messaging app.

Relationship
The Advento Approach

We Don't Sell You a Channel. We Run Your Messaging Operation.

Most vendors sell you an SMS gateway, or a WhatsApp API key, and walk away β€” leaving your team to figure out templates, routing, and reporting.

Advento sets up all three channels under one official, verified account structure, connects them to your CRM or order system, and hands you a single dashboard where every conversation β€” SMS, RCS, or WhatsApp β€” lives in one place.

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End-to-End Setup

Green tick application, DLT registration, and template approvals β€” we handle the paperwork.

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One API, Three Channels

Integrate once. Send SMS, RCS, or WhatsApp from the same endpoint β€” no separate contracts.

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Compliant by Design

DPDP Act 2023 aligned, DLT registered, and fully within Meta's official Business API terms.

How A Message Travels

From One Compose Box to the Right Inbox, Every Time

A single message you write is automatically shaped, routed, and tracked β€” this is the value loop running behind every campaign.

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Compose

Write your message once β€” we auto-format it for SMS, RCS, and WhatsApp.

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Smart Route

We check WhatsApp opt-in and RCS support first, falling back intelligently.

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Deliver

Sent via the richest channel available, at the lowest cost route β€” automatically.

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Engage

Read receipts, button taps, and replies land in one unified inbox.

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Optimize

Campaign analytics show which channel converts β€” reinvest with confidence.

RCS Messaging

Replace Plain SMS With Rich, Branded, Interactive Messages

RCS (Rich Communication Services) is the next evolution of SMS β€” verified sender identity, rich media, action buttons, and read receipts, built natively into Android.

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Verified Business Sender

Your brand name, logo, and verified tick appear in the thread β€” no unknown numbers, no phishing fears.

Trust Signal
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Rich Media Messaging

Images, carousels, and interactive cards β€” inside the native Messages app, no download needed.

Images + Cards
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Conversational Chatbot Flows

Appointment booking, order tracking, and lead qualification β€” automated directly in the messages app.

AI-Powered
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Delivery & Read Receipts

Know exactly who received, opened, and clicked β€” retarget non-openers with confidence.

Full Analytics
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CRM & API Integration

Trigger RCS messages from your CRM, ERP, or app via REST API β€” Salesforce, Zoho, HubSpot ready.

API Ready
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Transactional & Promotional

OTPs, booking confirmations, and festive offers β€” RCS handles both with higher conversions than SMS.

Both Modes
Professional Text Messaging

Bulk SMS Built for Business β€” Not a Personal Number Blaster

DLT-registered, transactional-grade SMS infrastructure for OTPs, alerts, and campaigns β€” the reliable fallback every messaging strategy still needs.

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DLT-Registered Templates

Every sender ID and template registered on the DLT platform β€” fully compliant, zero blocked messages.

Compliant
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Transactional & OTP SMS

Sub-3-second delivery for OTPs and order alerts, routed through priority carrier links.

Priority Route
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Bulk Promotional Campaigns

Send scheduled promotional blasts to segmented lists with click tracking on shortened links.

Segmented
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Multi-Route Delivery

Messages hop across multiple carrier routes automatically if one route is congested β€” 99.9% delivery.

99.9% Delivery
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Unicode & Regional Language

Send in Telugu, Hindi, or any regional script alongside English β€” Unicode fully supported.

Telugu Ready
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Real-Time Delivery Reports

Live delivery status per message β€” DND filtering and failed-number reporting built in.

Live Reports
SMS vs RCS vs WhatsApp

Why Forward-Looking Brands Use All Three, Not Just One

Every channel has a job. SMS guarantees reach. RCS adds richness where Android supports it. WhatsApp builds the relationship where the conversation continues.

Advento's smart routing picks the best available channel per customer, per message β€” so you get maximum reach without manually choosing every time.

98%
WhatsApp message open rate
45%
Higher RCS read rate vs SMS
100%
SMS reach β€” no internet needed
1 API
To send across all three
Feature SMSRCSWhatsApp
Rich Media
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Verified Sender
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Read Receipts
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Two-Way Chat
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Limited
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Chatbot Flows
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No App Needed
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App-based
Works Without Internet
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Compliance
DLT
Carrier
Meta Verified
Use Cases

Real Campaigns Running on Advento's Messaging Stack

All Use Cases
SMS
RCS
WhatsApp
Combined
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OTP & Login Alerts

Sub-3-second delivery for authentication codes β€” the one channel that must never fail.

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E-Commerce Order Updates

Order confirmed, shipped, out for delivery β€” sent as rich WhatsApp cards with a tracking button.

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Real Estate Lead Nurturing

Rich property cards with images, price, and a "Book Visit" button β€” converts 3Γ— faster than SMS.

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Hospital Appointment Reminders

Confirmed appointment cards via WhatsApp with doctor photo, time, and a reschedule button.

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Abandoned Cart Recovery

WhatsApp nudge first, RCS follow-up for non-openers, SMS as final fallback β€” full-funnel coverage.

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Festive Promotional Blast

Rich WhatsApp & RCS campaigns to opted-in customers, SMS blast to the rest β€” maximum reach, one send.

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24Γ—7 Support Chatbot

Automated WhatsApp flows resolve FAQs and hand off to a human agent only when needed.

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Bill & EMI Due Reminders

DLT-compliant transactional SMS reminders that reach every customer, smartphone or not.

Onboarding Process

From Brief to Go-Live in 7 Days Flat

A structured five-phase rollout β€” no surprises, no hidden costs. You approve every stage before we move forward.

01

Discovery Call

Understand your channels, volumes, and integration needs

02

Registration

DLT, green tick, and RCS agent applications submitted

03

Templates

Message templates drafted and sent for approval

04

Integration

CRM, e-commerce, and API connected to your dashboard

05

Launch & Optimize

Team trained, first campaign live, results tracked

Industries We Serve

Messaging Built for How Each Industry Actually Sells

Purpose-built templates and flows for each sector β€” not generic one-size-fits-all campaigns.

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E-Commerce & D2C
Order updates, cart recovery, catalog messaging
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Real Estate
Rich property cards, site-visit booking, lead nurturing
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Healthcare
Appointment reminders, reports ready alerts, follow-ups
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BFSI & Finance
OTPs, EMI reminders, statement delivery β€” DLT compliant
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Hospitality
Booking confirmations, check-in guides, upsell offers
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Education
Admission alerts, fee reminders, batch update broadcasts
Proven Results

Numbers That Show Up in Your Campaign ROI

Every metric below comes from real deployments of Advento's WhatsApp API, RCS, and SMS stack for Indian brands.

WhatsApp message open rate98%
RCS read rate vs SMS+45%
RCS click-through vs SMS3.5Γ—
Cart recovery lift via WhatsApp+31%
SMS delivery success rate99.9%
98%Of WhatsApp messages opened within the first hour
7 DaysFrom first call to your first live campaign
3.5Γ—Higher click-through with RCS vs plain SMS
99.9%SMS delivery guaranteed under our multi-route SLA
Our Promises to You
βœ“Official Meta BSP β€” no grey-market API keys
βœ“DLT registration and green tick handled for you
βœ“No lock-in β€” your number and templates stay yours
βœ“Dedicated WhatsApp support for critical issues
FAQs

Everything You Need to Know Before You Start

Is this the Official WhatsApp Business API, or a third-party tool?
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It's the official Meta Business Platform, accessed through Advento as an authorised BSP partner.

You get the same green-tick verification and template system Meta provides to any official Business Account β€” no unofficial workarounds.

How long does the WhatsApp green tick approval take?
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Typically 5–10 business days once your business documents are submitted, though Meta's timeline can vary.

We handle the full application and keep you updated at every step.

What happens if a WhatsApp template gets rejected?
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We review Meta's rejection reason, revise the template copy to match policy, and resubmit β€” at no extra cost.

Our template library already covers most common use cases to reduce rejection risk upfront.

Will RCS work on iPhones and older Android phones?
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RCS is natively supported on modern Android (5+) and iPhone (iOS 18+).

For unsupported devices, our platform automatically falls back to rich SMS or WhatsApp β€” ensuring full delivery coverage.

Do I need separate contracts for SMS, RCS, and WhatsApp?
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No. One Advento account and one API covers all three channels.

You get a single dashboard, single invoice, and one support line for everything.

Is my customer data secure and DPDP compliant?
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Yes. All message data is handled in line with India's DPDP Act 2023, and WhatsApp data is governed by Meta's Business Platform terms.

We never sell or share your contact lists.

Can the system integrate with our existing CRM or e-commerce platform?
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Yes β€” REST APIs and pre-built connectors for Shopify, WooCommerce, Zoho, Salesforce, and most CRMs.

Custom integrations are handled by our tech team at no extra cost for standard connectors.

What support is included after launch?
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All plans include dashboard support, template revision assistance, and a dedicated WhatsApp support line.

Priority SLA plans with faster response times are available for high-volume senders.

Get Started Today

Ready to Put Your Messaging on One Official Platform?

Talk to our team on WhatsApp β€” get a free channel audit, template recommendations, and a live demo customised for your business. No obligation, no sales pressure.

βœ“Official Meta BSP
βœ“DLT Registered
βœ“Live in 7 Days
βœ“No Lock-In Contracts