SMS comparisons

Objective criteria for choosing SMS infrastructure — not competitor fabrications.

• SMS gateway vs SMS API

  When you need the infrastructure pipe vs HTTP access for software.

• Transactional SMS vs bulk SMS

  Event-driven alerts vs one-to-many campaigns on the same gateway.

• OTP SMS vs email OTP

  When SMS verification is the better channel for Sri Lankan users.

• How to choose an SMS gateway in Sri Lanka

  Criteria: local networks, pricing, API, Sender ID, docs and support.

• SMS pricing Sri Lanka

  LKR packs, credits that never expire, free trial credit.

• GSM-7 vs Unicode (Sinhala & Tamil)

  How encoding changes credit cost for English vs Sinhala/Tamil.