US A2P - Supported Message Sender Types

[Jonathan_Vimont]

Question
What Senders (Originators, Numbers) are supported in the US for A2P SMS/MMS Services?

Answer

All A2P Senders in the US are Dedicated 2-way Products.  They all require some level of registration for the Brand (Sender) to the number(s).  They all must support/respond accordingly to mandatory Keywords for STOP (Opt-out) and HELP (Customer Support).  Supported Originators are Short Code, 10DLC (Local Numbers) and Toll Free Numbers (TFN).  Alpha is not supported today.

[#2]

Learn how to get started with SMS by watching this step-by-step tutorial. The video explains  the basics of SMS and shows you how easy it is to send your first message with Sinch:

Sign up to the Sinch Dashboard and get started today or take a look at the Sinch SMS Product page to learn more about our SMS products.