Best WhatsApp Business API for Architects in India 2026
A 2026 buyer guide to choosing the best WhatsApp Business API for an architecture practice in India. Covers what "best" actually means for a high-ticket, referral-led, long-cycle professional service (speed-to-first-reply on high-value enquiries, brief and project capture, design-stage approvals and document share, site-visit scheduling, milestone-payment nudges and referrals, and low pricing), the seven-stage architecture project WhatsApp lifecycle from enquiry to handover, the referral pipeline where a practice growth is won, a ₹0-platform vs per-seat SaaS margin comparison, the automation stack, and an illustrative practice cohort. RichAutomate flat pricing: ₹0 platform/setup/monthly, Client Pay ₹0.10 per message with Meta billed direct, SaaS Pay ₹1.50 marketing / ₹0.50 utility, 14-day trial plus 100 credits. All commercial specifics hedged, all cohort numbers illustrative, no ban guarantees; verify as of 2026. Operational guidance, not legal, tax or financial advice.