↔️ No.1 Most Powerful Two-Way SMS Platform
Turn SMS Into a
Real Conversation
with Your Customers
Go beyond one-way blasts. With CheapSMS Two-Way SMS, your customers can reply, respond, and interact — keyword automation, virtual numbers, live inbox management, and webhook integration all in one powerful platform.
98%
Reply Read Rate
45%
Avg. Response Rate
<2s
Keyword Trigger
100+
Keywords Supported
R
+91 98765 43210
DEALS
2:31 PM
B
BRAND · Auto Reply
Hi Rahul! 🎉 Here are today's top deals: 50% OFF Electronics. Reply STOP to opt out.
2:31 PM · Delivered ✓✓
P
+91 87654 32109
ORDER STATUS
2:33 PM
B
BRAND · Auto Reply
Your order #ORD8820 is Out for Delivery! Expected by 5 PM today. 📦
2:33 PM · Delivered ✓✓
S
+91 76543 21098
STOP
2:35 PM
B
BRAND · Auto Opt-Out
You've been unsubscribed. Reply START anytime to re-subscribe. ✅
2:35 PM · Delivered ✓✓
What Is It
What is Two-Way SMS?
Two-Way SMS allows your customers to reply to your messages — and your system to respond back automatically or route replies to your team. It transforms SMS from a broadcast channel into a real-time, interactive communication tool. Use it for customer support, surveys, order confirmations, feedback collection, appointment booking, and more — all over plain SMS, with no app required.
- ✓Customers reply to your SMS using normal text messages
- ✓Keyword triggers auto-respond in under 2 seconds
- ✓Virtual long numbers (VLN) dedicated to your brand
- ✓All replies land in your unified inbox or webhook endpoint
- ✓Route replies to your CRM, helpdesk, or custom app
- ✓Automatic STOP/UNSUBSCRIBE handling for compliance
- ✓Works on every phone — no app, no internet needed
98%
Reply Read Rate
45%
Avg. Response Rate
<2s
Keyword Auto-Reply
3x
Higher Engagement vs Email
Features
Everything You Need for Real SMS Conversations
A complete two-way SMS toolkit — keyword automation, virtual numbers, live inbox, CRM webhooks, and smart routing built into one platform.
Keyword Automation Engine
Define unlimited keywords and auto-reply templates. When a customer replies "DEALS", "HELP", "STATUS", or any custom word — your pre-configured response fires in under 2 seconds. Supports partial matching, wildcard keywords, and multi-level keyword trees for complex conversation flows.
Virtual Long Numbers (VLN)
Dedicated 10-digit virtual numbers assigned exclusively to your brand. Customers reply to your number and their response is routed only to you — no shared numbers, no cross-contamination. Pool of numbers available for high-volume campaigns needing multiple dedicated lines.
Unified Reply Inbox
All customer replies across every campaign and number land in one clean dashboard inbox. Sort by sender, keyword, date, or campaign. Assign replies to team members, add internal notes, and mark conversations resolved — a full helpdesk experience over SMS.
Real-Time Webhooks & API
Every inbound reply fires an HTTP POST to your webhook URL in real time — include the sender number, message text, timestamp, and matched keyword. Push replies directly into your CRM, helpdesk, chatbot, or custom workflow without polling the API.
CRM & Helpdesk Integration
Native integrations with Salesforce, HubSpot, Zoho CRM, Freshdesk, Zendesk, and 50+ more via Zapier. When a customer replies, automatically create a support ticket, update a contact record, or trigger an automation workflow — zero manual effort.
Automatic Opt-Out Compliance
STOP, UNSUBSCRIBE, QUIT, END — any opt-out keyword is automatically detected, the contact is immediately added to your list, and a compliant confirmation message is sent. Manual team intervention never needed for opt-outs.
Conversation Analytics
Track reply rates, keyword hit rates, response times, and conversation completion rates per campaign. See which keywords drive the most engagement, peak reply times by hour, and conversion attribution for two-way campaigns vs one-way blasts.
Smart Reply Routing
Route different replies to different teams or systems based on keyword. "SUPPORT" → helpdesk team. "ORDER" → fulfilment system. "SALES" → CRM. Time-based routing sends after-hours replies to a different queue than business-hours replies.
SMS Survey & Polling
Run multi-step SMS surveys with sequential keyword prompts. Ask a question, customer replies "1", "2", or "3" — system captures the answer and fires the next question automatically. NPS scores, product feedback, and satisfaction surveys over plain SMS.
Keyword Engine
Set Up Keywords, Automate Replies
Configure any keyword and the automated response you want to send back. When a customer texts that word to your virtual number — the reply fires instantly, 24/7, without any human involvement.
⚡ Live Keyword Examples
| DEALS | → Send today's offers + discount code 💬 Auto reply in <2s |
| ORDER | → Fetch order status from CRM, reply with details 🔗 Webhook triggered |
| HELP | → Send support menu + agent contact info 📥 Ticket created in Freshdesk |
| VOTE 1 | → Record vote, send confirmation + result so far 📊 Poll response logged |
| BOOK | → Trigger appointment booking flow over SMS 📅 Calendar integration |
| STOP | → Auto opt-out > |
API Integration
Receive Replies via Webhook
Every inbound SMS fires a real-time POST to your endpoint. Parse the keyword, sender number, and message body to trigger any action in your system.
// Inbound SMS Webhook Payload
// Fires on every customer reply in real time
POST https://yourapp.com/sms-webhook
{
"event": "inbound_sms",
"from": "919876543210",
"to": "918045001234",
"message": "ORDER STATUS",
"keyword": "ORDER",
"campaign_id":"CAMP_JUL_2024",
"timestamp": "2024-07-14T14:33:09Z",
"msgid": "CSMS_IN_00291"
}
// Your app receives this, looks up the order
// and fires a reply via our outbound API
How It Works
A Two-Way SMS Conversation in 4 Steps
From your outbound campaign to the customer's reply to your automated response — the entire loop completed in seconds.
1
Send Your SMS
Send a campaign or individual SMS from your virtual number. Include a call-to-action like "Reply DEALS for today's offers" or "Reply YES to confirm your appointment."
2
Customer Replies
Your customer replies with a keyword or free text from their normal SMS app — no app download, no internet required. The reply arrives at your virtual number instantly.
3
Keyword Matched
Our engine matches the reply against your keyword list in milliseconds. The matched keyword triggers the configured auto-reply AND fires your webhook with full reply details.
4
Response Delivered
Your automated reply reaches the customer in under 2 seconds. Simultaneously, the reply appears in your inbox and your CRM/helpdesk is updated — all without any manual work.
Use Cases
Every Way to Use Two-Way SMS
From customer support to appointment booking — any interaction where you need a reply, Two-Way SMS handles it better than email, app, or call.
Customer Support
Let customers text "HELP" for support. Route to the right team, create tickets automatically, and resolve faster than call centres — at a fraction of the cost.
Appointment Booking
Send appointment reminders with "Reply YES to confirm or NO to reschedule." Auto-update your calendar system based on the reply — zero manual admin.
Surveys & Feedback
Run NPS surveys, post-purchase feedback, and satisfaction polls via SMS. "Rate us 1-5" with keyword capture gives you structured data from customers on any phone.
Healthcare Reminders
Send "Reply YES to confirm your appointment or NO to cancel." Reduce no-shows by 50% and automatically free up slots when patients cancel via SMS reply.
Voting & Polls
TV show voting, employee engagement polls, product preference surveys. "Vote A, B, or C" with real-time tally tracking and automatic result SMS to all voters.
Order Management
Customers reply "ORDER" to get live status. "CANCEL" triggers cancellation flow. "RETURN" starts a return request — all integrated with your order management system.
Educational Quizzes
Send questions and collect SMS answers for daily quizzes, enrollment confirmations, and course progress check-ins — no app or internet needed from students.
Lead Qualification
Send "Reply BUDGET to share your budget range" or "Reply CALL to request a callback." Qualify leads over SMS and route hot prospects to sales instantly.
Industries
Transforming Customer Communication Across Every Sector
Two-Way SMS works wherever customers need to respond — every industry benefits from making SMS a dialogue instead of a monologue.
Healthcare
Appointment confirmations, prescription refill requests
E-Commerce
Order tracking, return requests, delivery confirmations
Banking & Finance
Transaction confirmations, loan application status
Education
Enrollment confirmation, parent-teacher communication
Real Estate
Site visit booking, enquiry qualification, follow-ups
Food & Delivery
Order confirmations, delivery ETA, feedback collection
Travel & Hospitality
Booking confirmations, check-in alerts, guest feedback
Field Services
Job confirmations, technician ETA, work order updates
Why Us
CheapSMS vs Other Two-Way SMS Platforms
Why 1 Lakh+ businesses choose CheapSMS for their two-way conversational SMS over Twilio, Exotel, Kaleyra, and others.
| Feature | ✦ CheapSMS | Twilio | Exotel / Kaleyra |
|---|---|---|---|
| Keyword Automation | ✔ Unlimited keywords | Via Messaging Services (complex) | Limited keyword support |
| Virtual Long Numbers | ✔ Instant provisioning | ✔ Available | |
| Unified Reply Inbox | ✔ Full team inbox | ✘ Build your own | Basic inbox only |
| Real-Time Webhooks | ✔ Sub-2 second | ✔ Yes | ✔ Yes |
| CRM Integrations | 50+ native integrations | Via Zapier / custom | 10–15 integrations |
| Auto Opt-Out Compliance | ✔ Fully automated | Manual setup required | Semi-automated |
| Setup Time | Live in 2 hours | Days of development | 24–48 hours |