A2P Overview
Understand Application-to-Person registration for US texting.
A2P 10DLC overview
A2P (application-to-person) registration tells US carriers who is texting and why. Unregistered traffic gets filtered.

Plain English summary
You register your brand (business) and your campaign (how you use texts). Carriers score trust and throughput based on compliance history.
Steps in Simplae
- Complete your business profile accurately (legal name, address, website).
- Confirm your details in Portal → SMS compliance — Simplae submits your brand and campaign registration to carriers on your behalf.
- Wait for approval — usually a few business days.
- Your number activates automatically once approved; no separate linking step.
Throughput limits
New brands start with lower daily limits. Limits rise with good behavior and volume history.
Rejections
Fix data mismatches (DBA vs. legal name). Do not spin up duplicate brands to cheat the system — carriers link violations.
See verification for timelines.