Messaging infrastructure for serious businesses
The SISMOO SMS Gateway is a carrier-grade messaging platform built for transactional, OTP and large-scale promotional traffic. Integrated directly with all five major Bangladesh telcos — Grameenphone, Robi, Airtel, Banglalink and Teletalk — plus international routes for global reach.
Built for every messaging need
- Transactional — order confirmations, delivery alerts, banking notifications, ticket bookings
- OTP — sub-2-second delivery with smart retry on backup routes
- Bulk promotional — campaigns to millions with delivery analytics
- Two-way SMS — keyword campaigns, customer surveys, support inboxes
Connectivity options
- Modern REST API with JSON payloads and webhook delivery reports
- Industry-standard SMPP for high-throughput integrations
- SOAP, HTTP GET / POST for legacy systems
- SDKs for PHP, Node.js, Python, Java and .NET
Reliability features
- Multi-route failover with auto-switching
- Smart number cleaning, MNP lookup and DND scrubbing
- Sender ID management with regulatory pre-approval
- Throughput on demand: from 10 SMS/sec to 1000+
- 99.9% uptime SLA backed by redundant infrastructure
Marketing tools
- Drag-and-drop campaign builder with personalization tags
- Audience segmentation, A/B testing and scheduling
- Drip and trigger-based automation
- Template library with pre-approved templates
- Detailed delivery, click and conversion analytics
White-label & reseller
Launch your own SMS brand with a fully white-label reseller portal, sub-account billing, custom domains, branded invoices and configurable margin per route.
Compliance & security
- BTRC-compliant routing
- Per-account rate limiting and abuse detection
- End-to-end encryption in transit
- SOC 2-aligned operational controls
Get a free test account
Sign up for a free test account, send your first 100 messages, evaluate latency and delivery, then move to production with predictable per-SMS pricing.