Communication

A2P Messaging

Application-to-person messaging: automated business messages sent to people, like OTPs and alerts.

A2P (Application-to-Person) messaging is automated messages sent from software to people — OTPs, order updates, reminders, offers — as opposed to person-to-person chat. Most business SMS and WhatsApp traffic is A2P, and it is the category governed by telecom rules like DLT in India.

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