> For the complete documentation index, see [llms.txt](https://docs.tsgglobal.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tsgglobal.com/api-reference/programmable-sms.md).

# Programmable SMS

- [Send an SMS Message](https://docs.tsgglobal.com/api-reference/programmable-sms/send-an-sms-message.md)
- [Receive an SMS Message](https://docs.tsgglobal.com/api-reference/programmable-sms/receive-an-sms-message.md)
- [Delivery Receipts (DLRs)](https://docs.tsgglobal.com/api-reference/programmable-sms/delivery-receipts-dlrs.md)
- [SMPP](https://docs.tsgglobal.com/api-reference/programmable-sms/smpp.md)
- [Headers](https://docs.tsgglobal.com/api-reference/programmable-sms/smpp/headers.md)
- [Errors](https://docs.tsgglobal.com/api-reference/programmable-sms/smpp/errors.md)