Authentication · 2026-07-18

The best Twilio & MSG91 alternative in India for OTP + WhatsApp

8 min readby QuickAuth

Twilio and MSG91 are capable platforms — but Indian teams routinely outgrow them for the same handful of reasons: USD billing, DLT you have to manage yourself, and a stack stitched together from separate SMS, WhatsApp and voice products. This is an honest look at what to demand from a Twilio or MSG91 alternative in India, and where QuickAuth fits.

Why teams look for an alternative

  • USD billing and global pricing. Paying for Indian OTP traffic in dollars, on routes aggregated for a global audience, rarely gives you the best per-message cost for India.
  • DLT is left to you. Registering your entity, header and every template on the TRAI DLT portal is slow and easy to get wrong. Many platforms leave you to navigate it alone.
  • Three products, three integrations. SMS, WhatsApp and voice are often separate SKUs with separate dashboards — so a simple “verify this phone number” turns into three integrations to maintain.
  • No fallback logic. If WhatsApp doesn’t deliver, you’re expected to build the SMS fallback ladder yourself.

What to demand from the alternative

Before you migrate, hold any option — including us — to this checklist:

  • One API for SMS, WhatsApp and voice. A single authentication API that routes a code across all three channels, with WhatsApp-first and automatic SMS fallback.
  • DLT handled for you. Entity, sender ID and template registration done during onboarding, not homework — see the DLT guide.
  • INR billing and direct routes. Local invoicing and direct operator SMS connectivity instead of aggregated USD routes.
  • Built-in anti-fraud. SMS-pumping (AIT) protection at the request step — prefix scoring, velocity heuristics and per-IP quotas — so inflated traffic is blocked before it costs you.
  • Auto-read SDKs. Android SMS Retriever and iOS oneTimeCode support so users don’t type the code.

How QuickAuth compares

QuickAuth is built India-first around that exact checklist. It’s a Direct Meta Tech Provider for WhatsApp and uses direct operator routes for SMS, so authentication over WhatsApp, SMS and voice runs through one API and one INR invoice. DLT registration, sender IDs and templates are handled for you during onboarding. SMS-pumping protection is on by default, and the official SDKs — web, React Native, iOS, Android and Flutter — ship auto-read out of the box.

Where a global platform optimises for every market at once, QuickAuth optimises for one: reliable, low-cost phone verification and WhatsApp messaging in India, with the compliance work taken off your plate.

Migrating without downtime

You don’t have to switch everything at once. A safe path is to run QuickAuth as the WhatsApp-first channel with SMS fallback alongside your existing SMS vendor, compare delivery and cost on real traffic, then move the SMS lane over once DLT approvals are in place. Because it’s one API, the integration you build for the pilot is the same one you keep.

Next step

If USD billing, DLT paperwork or a three-vendor stack is slowing you down, see the QuickAuth authentication API or the direct-route SMS API, and apply for access to get an INR quote sized to your volume.