What is P2P and A2P messaging?

Twilio Programmable SMS Text Messaging generally falls within one of two categories: P2P or A2P messaging. Read on to find out the differences, and which is right for you.

P2P Messaging

P2P, or person-to-person messaging, is generally defined as a two-way (back and forth) messaging conversation between two humans. This could be messages between friends on mobile phones, or messages connecting two people using Twilio's REST API as a conduit.

Some Twilio examples of P2P messaging include text communication between a customer and a support agent (like you would see with Flex), anonymous conversations between two users, or messages to and from a delivery or rideshare driver.

A2P Messaging

A2P, or application-to-person messaging, is any kind of traffic in which a person is receiving messages from an application. A2P messaging includes (but is not limited to) marketing messages, appointment reminders, chat bots or virtual assistants, notifications, and one-time passwords (OTPs) or PIN codes.

A2P messages can be subject to local country regulations (e.g. France and India). These restrictions can have delivery implications that customers should be aware of, such as message filtering by recipient carriers or delayed message delivery.

If your use case requires A2P messaging we recommend looking into using Short Codes or Alphanumeric Sender IDs.

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