10DLC Knowledge Base
Clear guides and checklists to help you stay compliant and improve deliverability.
Quick Compliance Tips
Identify your brand in the first message.
Include STOP instructions for promotional programs.
Use branded or first-party links; avoid public shorteners.
Do not send SHAFT content (Sex, Hate, Alcohol, Firearms, Tobacco).
Capture and store explicit consent before messaging.
Honor opt-out requests promptly across the program.
Getting Started
—What Is 10DLC?
What 10DLC is, why it exists, and how it differs from short codes and toll-free numbers.
CTIA Messaging Guidelines
Consent requirements, brand identification, STOP/HELP behavior, and content restrictions.
Pre-Send Compliance Checklist
Quick checks to reduce blocks, complaints, and carrier fees before you send.
Ready to Check Your Messages?
Use our free compliance checker to validate campaigns before sending.