Stack18 solution · CRM, marketing & support

Customer OS

Win, serve and keep customers on every channel.

CRM, WhatsApp, marketing automation, support and loyalty on one customer record.

Every lead from Meta, Google, IndiaMART or a missed call lands in one CRM, gets assigned in seconds and is followed up on WhatsApp automatically. Sales, marketing and support work from the same customer record, and an AI agent answers in Hindi and English around the clock.

  • 28 modules
  • Editions from ₹1.6L
  • Launch edition: 3–4 weeks
See editions & prices ↓Configure modules
<5 mintarget first response, automated
3–12weeks to go live, by edition
10+lead sources synced
₹0per-seat fees
Quick answer

What is Customer OS?

Customer OS puts CRM, WhatsApp, marketing automation, support and loyalty on one customer record, in 28 modules. Editions are priced once in rupees: Launch ₹1.6L, Grow ₹4.95L and Scale ₹8.7L, excluding GST, with no per-user fees. Launch editions go live in 3 to 4 weeks.

See it in action

See Customer OS in action.

A deal pipeline and a shared WhatsApp inbox on one customer record.

Illustrative interface with sample data. Your screens are configured to your workflows.
Ad & Portal Lead Sync

Leads from Meta, Google, IndiaMART, JustDial, 99acres and MagicBricks synced in real time.

Lead Scoring & Auto-assignment

Round-robin, territory and skill-based assignment, with scoring that puts hot leads first.

Customer 360

One profile with every enquiry, purchase, message, ticket and payment.

Sound familiar?

What slows customer teams down today.

Leads go cold in hours

Enquiries from ads, portals and calls sit in different inboxes, and the first reply comes a day later.

WhatsApp is on personal phones

Conversations live on salespeople's phones, and leave the company when they do.

Marketing can't prove ROI

Spend is tracked in one place and revenue in another, so nobody knows which campaign actually sold.

Support is a shared inbox

Complaints get lost between email, calls and WhatsApp, with no SLA and no history.

What changes

From workarounds to one connected system.

TodayLeads copied from portals into Excel
With Customer OSEvery source synced, de-duplicated and assigned in seconds
TodayWhatsApp on personal phones
With Customer OSA shared, company-owned WhatsApp inbox
TodayFollow-ups depend on memory
With Customer OSAutomated journeys on WhatsApp, SMS and email
TodayComplaints lost between channels
With Customer OSTickets with SLAs, history and customer feedback
TodayCampaign ROI guessed
With Customer OSAttribution from first click to closed deal
Editions

Three ways to start. Grow module by module.

Each edition is a tested bundle of modules at 10–20% below their combined price. Prices are one-time build and setup, in rupees, excluding GST.

Launch

3–4 weeks

Teams replacing spreadsheets and personal WhatsApp.

₹1,60,000

₹1,80,000 Save ₹20,000 (10%) · 5 modules

Includes

  • Lead & Deal CRM
  • Lead Capture & Landing Pages
  • Ad & Portal Lead Sync
  • WhatsApp Team Inbox

Grow

6–8 weeks

Sales and marketing teams automating follow-up.

₹4,95,000

₹5,80,000 Save ₹85,000 (15%) · 15 modules

Everything in Launch, plus

  • Lead Scoring & Auto-assignment
  • Quotes, Bookings & Payment Links
  • WhatsApp & SMS Campaigns
  • Email Campaigns
  • Journey Automation
  • Helpdesk & Ticketing
  • Feedback, NPS & Reviews
  • and 2 more

Scale

10–12 weeks

Multi-team businesses with support, loyalty and AI.

₹8,70,000

₹10,85,000 Save ₹2,15,000 (20%) · 24 modules

Everything in Grow, plus

  • Cloud Calling & Recording
  • Sales Mobile App
  • Customer Portal
  • Knowledge Base
  • Loyalty & Points
  • Referral Programme
  • Attribution & Campaign ROI
  • and 2 more

Need a different mix? Pick individual modules and see your price instantly.

Module guide

Every Customer OS module, explained.

28 modules in 6 groups. Tags show which editions include a module. Bigger modules include the smaller ones they contain, so nothing is charged twice, and required modules are added for you.

Capture

4 modules

Every enquiry, from every source, in one place.

Lead Capture & Landing Pages

₹40,000

Fast landing pages and forms with UTM tracking and instant routing to the CRM.

RequiresLead & Deal CRM
LaunchGrowScale

Ad & Portal Lead Sync

₹35,000

Leads from Meta, Google, IndiaMART, JustDial, 99acres and MagicBricks synced in real time.

RequiresLead & Deal CRM
LaunchGrowScale

Missed Call & IVR

₹35,000

Missed-call campaigns and IVR menus that create leads and route calls to the right person.

RequiresLead & Deal CRM
Add-on

Website Chat

₹20,000

Live chat on your site that hands over to WhatsApp so the conversation never drops.

Add-on

Sell

6 modules

Respond first and close more.

Lead & Deal CRM

₹55,000

Leads, deals and pipelines with follow-up reminders, stages and a full activity history.

IncludesCustomer 360
LaunchGrowScale

Customer 360

₹30,000

One profile with every enquiry, purchase, message, ticket and payment.

LaunchGrowScale

Lead Scoring & Auto-assignment

₹35,000

Round-robin, territory and skill-based assignment, with scoring that puts hot leads first.

RequiresLead & Deal CRM
GrowScale

Cloud Calling & Recording

₹45,000

Click-to-call from the CRM with call recording and logs, through your telephony provider.

RequiresLead & Deal CRM
Scale

Quotes, Bookings & Payment Links

₹35,000

Send quotes, take bookings and collect token amounts by UPI link.

RequiresLead & Deal CRM
GrowScale

Sales Mobile App

₹60,000

Leads, calls, visits and follow-ups on the phone, with check-ins for site visits.

RequiresLead & Deal CRM
Scale

Engage

6 modules

Conversations that move customers forward.

WhatsApp Team Inbox

₹50,000

One company WhatsApp number shared across your team, with assignment, notes and templates.

RequiresCustomer 360
LaunchGrowScale

Segments & Audiences

₹30,000

Dynamic segments by behaviour, stage, location and value.

RequiresCustomer 360
GrowScale

WhatsApp & SMS Campaigns

₹45,000

Broadcasts with approved templates and DLT-compliant SMS, with delivery and reply tracking.

RequiresSegments & Audiences
GrowScale

Email Campaigns

₹25,000

Newsletters and drip emails with a visual editor and deliverability tracking.

RequiresSegments & Audiences
GrowScale

Journey Automation

₹70,000

Visual journeys that trigger WhatsApp, SMS, email and tasks from customer actions.

RequiresSegments & Audiences
GrowScale

Push & In-app Messages

₹30,000

App push notifications and in-app messages driven by the same segments.

RequiresSegments & Audiences
Add-on

Serve

4 modules

Support that customers remember for the right reasons.

Helpdesk & Ticketing

₹55,000

Tickets from WhatsApp, email, calls and web, with SLAs, escalation and canned replies.

RequiresCustomer 360
GrowScale

Knowledge Base

₹30,000

A searchable help centre that answers common questions and feeds the AI agent.

Scale

Customer Portal

₹60,000

Customers check bookings, payments, documents and tickets themselves.

RequiresCustomer 360
Scale

Feedback, NPS & Reviews

₹25,000

NPS and CSAT on WhatsApp after every interaction, and Google review requests for happy customers.

RequiresCustomer 360
GrowScale

Retain

3 modules

Bring customers back, and have them bring friends.

Loyalty & Points

₹55,000

Points, tiers and rewards across online and offline purchases.

RequiresCustomer 360
Scale

Referral Programme

₹35,000

Unique referral links and codes with automatic rewards.

RequiresCustomer 360
Scale

Memberships & Renewals

₹45,000

Plans, renewals and UPI AutoPay reminders so memberships don't lapse.

RequiresCustomer 360
Add-on

Intelligence & AI

5 modules

Know what works, and let AI handle the rest.

Customer Analytics

₹45,000

Funnels, cohorts, source performance and team productivity dashboards.

RequiresCustomer 360
GrowScale

Attribution & Campaign ROI

₹40,000

Connect ad spend to leads, visits and revenue to see which campaigns pay back.

RequiresCustomer Analytics
Scale

AI WhatsApp Agent

₹1,20,000

Answers, qualifies and books appointments on WhatsApp 24/7 in English, Hindi and Hinglish, handing over to your team when needed.

RequiresWhatsApp Team Inbox, Knowledge Base
Scale

AI Call Insights

₹60,000

Call summaries, sentiment and coaching notes generated from recorded calls.

RequiresCloud Calling & Recording
Scale

Consent & DPDP Centre

₹35,000

Consent capture, preferences and data requests handled in line with India's DPDP Act.

RequiresCustomer 360
GrowScale
Configure

Start from an edition, or build your own.

Pick an edition to apply its price, then add or remove modules. Indicative one-time build and setup, excluding GST. Request a quote when you are ready.

India-ready

Connects to the tools Indian businesses run on.

Integrations are scoped with your quote. Third-party accounts stay in your name, and usage is billed by each provider.

Lead sources

Meta Lead AdsGoogle AdsIndiaMARTJustDial99acresMagicBricks

Messaging

WhatsApp Business APISMS (DLT)EmailPush

Telephony

ExotelKnowlarityMyOperator

Payments

RazorpayCashfreeUPI AutoPay

Reviews

Google Business Profile
Built for

Who runs on Customer OS.

Real estate

Portal leads, site visits, bookings and token payments tracked end to end.

Education & coaching

Enquiry to admission journeys, counsellor calls and fee reminders.

Clinics & healthcare

Appointment booking on WhatsApp, reminders and patient feedback.

Financial services

Lead routing, document collection and consent records in one place.

Best forReal estate and housingEducation and coachingClinics and healthcare providersFinancial services and insurance
What you pay for

Clear pricing, with no per-seat fees.

You pay once to build and set up the modules you choose.

Included in every edition and module price

  • Deployment on your own cloud account or servers
  • Configuration of workflows, roles, approvals and templates
  • Standard data import from Excel, CSV or your current tool
  • Team training, live and recorded
  • 30 days of hypercare after go-live
  • Documentation handed over to you

Paid separately, at cost

  • Cloud hosting On your own AWS, Azure or Google Cloud account, typically a few thousand rupees a month to start.
  • Third-party usage Payment gateway, WhatsApp, SMS, telephony and AI model charges, paid directly to each provider at their rates.
  • Custom features Anything beyond a module's scope is estimated separately before work starts.

Optional Stack18 Care plan from 15% of build value per year: updates, security patches, priority support and small enhancements.

Go-live plan

Live in 3–4 weeks with Launch.

Grow typically takes 6–8 weeks and Scale 10–12 weeks, delivered in phases so your business keeps running.

01Week 1

Discover

We map your process, data and integrations, confirm the edition or module set, and fix a go-live date.

02Weeks 2–4

Configure

The solution is deployed on your cloud and configured to your workflows, roles, approvals and templates.

03Alongside

Integrate & migrate

We connect payments, GST, messaging and your existing tools, and bring your data across.

04Then

Go live & grow

Training, a supported launch and 30 days of hypercare. Add modules whenever you are ready.

FAQ

Customer OS questions.

Talk to Stack18
Can my team keep using WhatsApp?

Yes, on one company number through the WhatsApp Business API. Every conversation is shared, assigned and saved to the customer record.

Which lead sources can you connect?

Meta and Google ads, IndiaMART, JustDial, 99acres, MagicBricks, website forms, missed calls and more. New sources are scoped with your quote.

Does the AI agent speak Indian languages?

Yes. It answers in English, Hindi and Hinglish out of the box, and other Indian languages can be added. It hands over to a person whenever it should.

Is there a per-seat fee?

No. You pay once per module. WhatsApp, SMS and telephony usage is billed by those providers at their rates.

Is it DPDP-ready?

The Consent & DPDP Centre records consent, honours preferences and handles data requests, and all data stays on your own cloud account.

Can we migrate from our current CRM?

Yes. We bring across contacts, deals and history from tools like Zoho, LeadSquared, HubSpot or spreadsheets.

Related services

Services that pair with Customer OS.

Want to build and sell your own customer platform? See SaaS product development, or have us tailor workflows with custom software development.

See Customer OS running on your business.

Share how you work today. We will recommend an edition, show you a live demo and send a clear, fixed quote.

Book a demo →Configure and price