You will get a custom WhatsApp & SMS messaging platform with AI agents
Project details
Businesses today rely heavily on WhatsApp and SMS to communicate with customers. I help companies design and implement messaging automation systems that improve customer engagement, automate support, and drive more sales.
Since 2021, my team and I have built Mercuri, Quizilio, and Santhe, platforms focused on messaging and customer communication. With 5+ years of experience in the communication space (SMS & WhatsApp), we specialize in building scalable systems using WhatsApp Cloud API, SMS infrastructure, and CRM integrations.
I can help you build and implement:
• AI Agents for WhatsApp to automate customer conversations
• SMS (via Twilio or Telnyx) and WhatsApp marketing automation
• Automated notifications and reminders
• CRM messaging automation with HubSpot or Pipedrive
• Messaging automation for Shopify and Wix
If you're looking to build a reliable WhatsApp and SMS automation system with AI Agents, I’d be happy to help.
Since 2021, my team and I have built Mercuri, Quizilio, and Santhe, platforms focused on messaging and customer communication. With 5+ years of experience in the communication space (SMS & WhatsApp), we specialize in building scalable systems using WhatsApp Cloud API, SMS infrastructure, and CRM integrations.
I can help you build and implement:
• AI Agents for WhatsApp to automate customer conversations
• SMS (via Twilio or Telnyx) and WhatsApp marketing automation
• Automated notifications and reminders
• CRM messaging automation with HubSpot or Pipedrive
• Messaging automation for Shopify and Wix
If you're looking to build a reliable WhatsApp and SMS automation system with AI Agents, I’d be happy to help.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance OptimizationWhat's included
| Service Tiers |
Starter
$10,000
|
Standard
$25,000
|
Advanced
$35,000
|
|---|---|---|---|
| Delivery Time | 30 days | 45 days | 60 days |
Number of Revisions | Unlimited | Unlimited | Unlimited |
Design Customization | |||
Content Upload | |||
Responsive Design | |||
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$3,000 - $5,000Frequently asked questions
About Karthik
WhatsApp Business API Expert | SaaS | AI Automation | Twilio SMS API
Bengaluru, India - 7:03 pm local time
I’m Karthik, the founder of Mercuri.cx, a conversational messaging platform that integrates WhatsApp and SMS into CRM systems, SaaS platforms, and eCommerce platforms.
Over the past 5+ years, I’ve been building messaging infrastructure used by 5,000+ businesses globally, delivering 10M+ messages across WhatsApp and SMS. Previously, I built Santhe, a WhatsApp and SMS marketing platform for Wix used by 2,000+ eCommerce stores worldwide, which was later acquired by Distrobird.
Today I work with startups, agencies, and SaaS companies that want to build reliable messaging systems, automation workflows, and messaging-first products.
Agentic AI + WhatsApp & SMS (Built for Real Business Operations)
WhatsApp and SMS are where real customer conversations happen, but most “chatbots” stop at simple replies. I build agentic AI systems that go beyond conversation — AI that can take actions across your tools and workflows. These systems integrate directly with CRMs, booking platforms, and internal tools to automate real business processes.
What I Build (Customer Outcomes)
• Messaging SaaS Platforms: multi-tenant WhatsApp and SMS platforms with shared inboxes, automation engines, campaign tools, analytics, and subscription billing.
• Customer journeys: lead qualification, automated follow-ups, appointment booking, reminders, and customer support automation via WhatsApp and SMS
• Messaging automation systems: campaigns, notifications, order updates, and two-way conversations integrated directly with business workflows
• CRM-driven messaging: WhatsApp and SMS triggered by CRM events (new leads, deal stages, support tickets, renewals)
• AI-powered assistants: AI agents that respond to customers, qualify leads, capture data, and trigger actions inside internal systems
• Operational workflows: onboarding flows, internal approvals, reminders, and data collection through conversational interfaces
• Integrations: CRMs, booking systems, eCommerce platforms, and custom APIs designed for reliability, scale, and real production use
The Tech Stack
• Modern Infrastructure: Scalable architectures built with technologies such as Node.js, serverless infrastructure, and cloud platforms designed to handle messaging workloads and high-volume communication.
• Full Ownership: Clean, maintainable codebases that remain fully exportable. Clients retain ownership of the systems built for them, avoiding dependency on proprietary platforms.
• Built for Scale: Messaging systems designed to handle real production workloads, including high message volumes, automation workflows, and multi-tenant SaaS environments.
• AI-Ready Architecture: Flexible integrations with AI providers such as OpenAI and other LLMs, enabling businesses to build intelligent assistants, automated workflows, and conversational systems.
• Integration-Friendly: Designed to connect seamlessly with CRMs, booking platforms, eCommerce systems, and custom APIs so messaging becomes part of the company’s operational infrastructure.
When Speed Matters
Mercuri powers messaging for 5,000+ businesses globally and has delivered 10M+ messages across WhatsApp and SMS.
The platform enables capabilities such as:
• Shared team inbox for WhatsApp and SMS
• Automated messaging workflows
• AI agents that can respond, qualify leads, and trigger actions in business systems
• CRM-triggered conversations
• Campaign broadcasting and customer engagement
• Integrations with platforms like HubSpot, Pipedrive, Wix, and Microsoft Teams
Because the platform is already production-tested, projects can move from idea to launch significantly faster compared to building everything from scratch.
Let’s Build Your Messaging System
If you're looking to implement WhatsApp, SMS, or AI-powered messaging, I can help you design and build the right system.
Typical projects include:
• Messaging SaaS platforms with SMS & WhatsApp shared inboxes, marketing campaigns, AI agents and AI automation tools
• WhatsApp Business API integrations with platforms like Shopify, Wix, HubSpot, Pipedrive, or custom systems
• AI agents that qualify leads, answer customer questions, and automate support
• Messaging automation workflows for reminders, follow-ups, and customer experience
I start by understanding your business workflow and messaging needs, then design the architecture and build the system so it can run reliably in production.
If you already have an idea or project in mind, feel free to reach out and we can discuss how to bring it to life.
Steps for completing your project
After purchasing the project, send requirements so Karthik can start the project.
Delivery time starts when Karthik receives requirements from you.
Karthik works on your project following the steps below.
Revisions may occur after the delivery date.
Understand your messaging workflow
We start with a short discussion to understand your business, messaging goals, and automation requirements.
Setup WhatsApp / SMS infrastructure
Configure WhatsApp Cloud API, SMS providers, and required integrations with your platforms.