TumaFlow guides
Bulk SMS and WhatsApp business messaging
TumaFlow specializes in WhatsApp Business Cloud API messaging—many teams pair it with or phase it in where SMS was previously default.
Bulk SMS remains widely used for one-time passwords, bank alerts, and short promotional blasts. WhatsApp can offer richer templates, interactive buttons where supported, and often stronger engagement—provided you meet Meta eligibility, display-name, and consent requirements.
When WhatsApp fits better than SMS
Consider WhatsApp for multi-step onboarding, longer policy explanations, appointment logistics, or merchandising flows that exceed 160 characters comfortably. Authentication templates can carry OTPs with copy-code UX on supported devices.
Compliance on both channels
SMS and WhatsApp each require lawful use of personal data and carrier or platform rules. Document how numbers were obtained, offer opt-out paths, and retain secrets (API keys) with least-privilege access. TumaFlow helps with delivery mechanics—not legal advice.
Ready to start with WhatsApp-first flows? Explore OTP messaging and customer notifications.