> For the complete documentation index, see [llms.txt](https://guide.nomsa.gov.kh/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://guide.nomsa.gov.kh/api-guide/overview.md).

# Overview

## Programmatic APIs

Our programmatic APIs allow you to send messages programmatically. Messages are sent to one recipient at a time.

You can use our programmatic API to send emails or SMSes typically related to application approvals, OTPs, email receipts, reminders etc.

### Programmatic Email API

We provide a **modern, cost-effective, and compliant PaaS** for to send programmatic emails.

For more info, [see here](/api-guide/programmatic-email-api/send-email-api.md).

### Programmatic SMS API

For more information, [see here](#programmatic-sms-api).