Why would I want a short code instead of sending SMS from a regular US phone number or phone numbers?
Twilio short codes enable your application to send SMS at 30 messages per second versus a long code which can send 1 message per second. This high-throughput is perfect for applications that need to send SMS messages to lots of users or need to send many time sensitive messages. Additionally, based on type of application you build and the messages you’re sending, a short code may be the only type of number that can support your use case. Examples of applications that are best on a short code are: Marketing communications, large volume messaging, one-way notifications to users, and SMS marketing messages. If you’re still not sure, feel free to contact us.