# Two-way SMS messaging in AWS End User Messaging SMS AWS End User Messaging SMS includes support for two-way SMS. When you set up two-way SMS, you can receive incoming messages from your customers. You can also use two-way messaging together with other AWS services, such as Lambda and Amazon Lex, to create interactive text messaging experiences. When one of your customers sends a message to your phone number, the message body is sent to an Amazon SNS topic or Connect Customer for processing. Two-way SMS is only available in certain countries and regions. For more information about two-way SMS support by country or region, see [SMS and MMS country capabilities and limitations](phone-numbers-sms-support-by-country.md). Sender IDs do not support two-way SMS messaging. **Note** Two-way SMS is only available in certain countries and regions. For more information about two-way SMS support by country or region, see [SMS and MMS country capabilities and limitations](phone-numbers-sms-support-by-country.md). Two-way MMS is not supported but your phone number can still receive incoming SMS messages in response to an outbound MMS message. Connect Customer for two-way SMS is available in the AWS Regions listed in [Chat messaging: SMS subtype](https://docs.aws.amazon.com/connect/latest/adminguide/regions.html#chatmessaging_region) in the *Connect Customer administrator guide*. **Topics** + [Set up two-way SMS messaging for a phone number](two-way-sms-phone-number.md) + [Set up two-way SMS messaging for a phone pool](two-way-sms-pool.md) + [IAM policies for Amazon SNS topics](two-way-sms-iam-policy.md) + [Topic policies for Amazon SNS topics](two-way-sms-iam-policy-auto.md) + [IAM policies for Connect Customer](two-way-connect-iam-policy.md) + [Example two-way SMS message payload](two-way-sms-payload.md)