Send the moment OTP is generated. Authentication category is the cheapest WhatsApp template tier in India.
{{1}} is your login OTP for {{2}}. Valid for 5 minutes. Don't share with anyone.OTP: {{1}}. Use to log in to {{2}}. Expires in 5 min.Your {{2}} login code: {{1}}. Valid 5 minutes only.Login code for {{2}}: {{1}}. Don't share.Authentication category — strictest approval. No marketing, no greetings, just the OTP and warning. Misuse triggers WABA suspension.
Hindi/regional translation tips: maintain placeholders verbatim. Tone in regional languages tends formal — use 'aap' (Hindi), respectful equivalents in Tamil/Telugu/etc.
WhatsApp Business API charges per 24-hour conversation window, not per message. Once a conversation opens (with a template send or customer-initiated message), you can exchange unlimited messages with that customer for the next 24 hours at no extra cost. Authentication is the cheapest tier — only OTP/2FA codes qualify.
Doggu pre-loads this template, submits it to Meta for approval, and triggers it automatically based on the trigger event (otp login). Set it up once, fire forever.
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