Outbound messaging
After you set up an origination identity and a configuration set, you send an SMS message with
the SendTextMessage operation. Use the AWS End User Messaging console to send a test message, or the
AWS CLI to send from your application. The examples use a phone pool as the origination identity, which
is the recommended approach; you can also specify a single phone number or sender ID instead.
Note
A single SMS message carries up to 140 bytes. Longer messages are split into multiple parts and billed per part, and AWS End User Messaging automatically selects the most efficient encoding. For character encoding, message size, and throughput, see Limits and quotas.