A2P stands for application-to-person messaging, texts sent from an application or platform to people, as opposed to one person typing to another. Nearly all political texting is A2P, and understanding the term matters because A2P is exactly the category the carriers built 10DLC registration to govern. Here's what it means for a campaign.
What does A2P mean?
A2P is any messaging sent from software rather than a personal phone conversation, a campaign platform texting a list, a bank sending an alert, a store sending a coupon. The opposite is P2P in the pure sense, two individuals texting each other. When a campaign sends through a texting platform, that's A2P, and it's treated differently from ordinary personal texting because it operates at scale.
Why does A2P matter for campaigns?
Because A2P traffic is what the carriers require to be registered. To separate legitimate senders from spammers, the carriers built the 10DLC framework specifically for A2P messaging, and unregistered A2P traffic gets filtered. So the moment a campaign sends through a platform, it's in A2P territory and needs to register. This is the through-line: A2P is the category, and 10DLC is the registration that makes A2P deliverable.
Is peer-to-peer texting A2P?
It's a nuanced case. Peer-to-peer texting uses a platform but inserts human intervention on each send, which changes its legal posture under the TCPA. For carrier and registration purposes it still runs through A2P infrastructure and benefits from registration, but the human-in-the-loop design is what gives P2P its distinct consent standing. The short version: campaigns register their sending regardless, and the P2P distinction matters most for the consent question, not the registration one.
Frequently asked questions
What is A2P messaging?
Application-to-person messaging, texts sent from software or a platform to people at scale, as opposed to one person texting another. Almost all political texting is A2P.
Why does A2P need registration?
Because the carriers built 10DLC specifically to vet A2P senders and separate legitimate ones from spammers. Unregistered A2P traffic gets filtered.
Is political texting A2P or P2P?
Political texting sent through a platform is A2P. Peer-to-peer texting adds human intervention that changes its consent posture, but it still runs on A2P infrastructure and benefits from registration.
Keep reading: what 10DLC means for your campaign and what is peer-to-peer texting?. For registration, see The Campaign Registry.