---
title: "What is A2P? | Chargezen"
description: "Messaging sent from an application or software to a person's mobile device, as opposed to person-to-person (P2P) messaging."
url: "https://chargezen.com/glossary/a2p-application-to-person"
lang: "en"
---

Canonical URL: https://chargezen.com/glossary/a2p-application-to-person

# A2P

Application-to-Person

SMS Marketing

Messaging sent from an application or software to a person's mobile device, as opposed to person-to-person (P2P) messaging.

## What is A2P?

Application-to-Person (A2P) messaging refers to automated text messages sent from a software application to mobile users. This is the standard for business SMS. **A2P use cases:** - Marketing campaigns - Order confirmations - Shipping notifications - Appointment reminders - Two-factor authentication - Customer service **A2P requirements:** - Registration with carriers (10DLC for US) - Compliance with TCPA and carrier guidelines - Proper opt-in consent - Honor opt-out requests

## Example

For example, a shipping update sent automatically from a store's messaging platform to a customer's phone is A2P. A store owner texting a friend from a personal phone is P2P. If the store sends its updates from a standard US 10-digit number, that number must be registered for 10DLC so carriers will deliver the messages reliably.

## Why A2P Matters

Understanding A2P is essential for compliant and effective business SMS.

## Explore More Terms

Browse our complete glossary of e-commerce and subscription terms.

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