2 articles

Guides

Step-by-step how-tos for messaging teams.

Phone showing a TextNation OTP SMS with a delivered-in-2-seconds badge

Guides 6 min read

OTP SMS Not Arriving? 9 Fixes for Faster One-Time Passwords in India

Late or missing OTPs cost sign-ups and sales. Here are the nine most common reasons OTP SMS fails in India — from DLT template mismatches to shared queues — and how to fix each one.

TextNation Product Team18 October 2026

WhatsApp order-shipped template card with Marketing, Utility and Authentication labels

Guides 5 min read

WhatsApp Template Categories Explained: Marketing, Utility and Authentication

Every WhatsApp template is Marketing, Utility or Authentication — and the category decides what you can say, how Meta reviews it and what you pay. Here is how to choose right and avoid surprise recategorisation.

TextNation Product Team18 October 2026

More topics:Compliance Strategy Engineering