How U.S. A2P 10DLC Affects Developers and Small Businesses

Twilio has been working with AT&T and T-Mobile to create a trusted SMS ecosystem in the US through A2P 10DLC, which brings changes such as registration requirements, carrier fees, and daily caps. For developers and small businesses using Twilio for SMS, there's good news: if they send fewer than 3000 SMS segments and MMS messages per day with fewer than 5 US local long-code phone numbers, no additional work is required on their end. Twilio will handle the complexities of A2P 10DLC, waive monthly registration fees, and pass through carrier fees without markup, allowing developers to focus on building great software. However, for those sending more messages, registering a Business Profile and creating a Messaging Service may be necessary, and some limitations apply to phone number usage.