HTTP to Voice OTP for DIDWW Outbound SIP Trunks
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Updated
Jun 14, 2026 - TypeScript
HTTP to Voice OTP for DIDWW Outbound SIP Trunks
Production-grade OTP authentication with Twilio — SMS, voice, WhatsApp, rate limiting, fraud prevention
Pak Sender is Pakistan's #1 messaging platform — bulk SMS, Voice OTP and email marketing with a 99%+ delivery rate across 150+ countries, 1M+ daily messages, invoices & reports, and a developer-friendly REST API. SMS Rs 4.30, Voice OTP Rs 5, Email Rs 0.30.
📨 Multi-tenant messaging and OTP API built with ASP.NET Core and .NET 10. Queue email and SMS delivery with RabbitMQ, backed by SQL Server and Redis.
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