The one channel that always reaches your customer
5 billion+ phones, 98% open rate, sub-second OTP delivery. CleverStack runs your transactional, promotional, and fallback SMS on a single DLT-compliant platform — built for Indian volumes, ready for global routes.
Email gets buried. Push gets ignored. SMS gets read.
98% open rate within 3 minutes
SMS still wins on attention. Critical alerts, OTPs, and reminders land where customers actually look — and read.
Universal reach across every device
Every phone in India and 200+ countries can receive SMS. No app installs, no data plan, no rendering issues.
10x more effective than email
Higher open rate, faster reply rate, and DLR-tracked delivery — SMS converts where email gets buried.
Every customer touchpoint where SMS is the right answer
Supercharge SMS across every stage of the customer journey
Same platform, four very different jobs. Switch tabs to see exactly how CleverStack handles each.
OTPs and account alerts that land in under a second
Sub-second OTP delivery, DLR confirmation back to your app, and automatic retry on transient failures. Built for fintech, banking, and any flow where a delayed code means a lost user.
Built for maximum reach, real visibility, and zero-friction compliance
Not a thin SMS gateway. A complete operations layer with the dashboards, audit trail, and automations your team actually needs.
Live campaign dashboard
Delivery, failure, opt-out, and spend — all in one view. Filter by template, sender ID, batch, or destination operator.
90-day message log search
Your team can independently look up any message: when it was sent, who it went to, DLR status, and replies — no support ticket required.
Personalised at scale
Use dynamic variables — name, balance, due date, link — across millions of messages. Smart fallbacks if a variable is missing.
DLT-compliant for India
Native DLT integration, header & template approval workflow, scrubbing, and consent management — all built in for TRAI compliance.
Solving the SMS problem your industry actually has
OTP latency kills conversions; missed payment reminders raise NPAs.
What actually happens when you press send
Every message moves through the same five stages — designed to be fast, compliant, and fully auditable.
Audience defined
Pulled from your CRM, contact tables, or campaign feed. Segmented by lifecycle stage, intent, or any custom attribute.
DLT scrubbed & templated
Each message is matched to an approved DLT template, header ID, and consent record before it leaves the platform.
Operator-aware routing
Smart routing picks the best sender path per operator (Jio / Airtel / Vi / BSNL). International routes pick the best tier-1 carrier.
DLR + reply tracking
Every status — delivered, failed, opted out, or replied — fires a webhook to your CRM and writes to the contact record in real time.
Analytics + audit trail
90 days of message-level logs your team can search independently. Filter by template, sender, batch, or destination operator.
Engineered for high-volume customer messaging
Book a 30-min consultation
Show us your current SMS stack. We’ll benchmark your latency, delivery, and spend, and map out what CleverStack can change in week one.
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DLT, throughput, pricing, latency, integration time — the questions our sales team gets every day.
Ready to transform your SMS stack?
OTP, alerts, promotions, and fallback — on one platform, with the dashboards your team has been asking for.