# Other APIs

- [Send customer care message using GET](https://developers.esms.vn/en/esms-api/other-apis/send-customer-care-message-using-get.md)
- [Send customer care message using POST X-Form](https://developers.esms.vn/en/esms-api/other-apis/send-customer-care-message-using-post-x-form.md)
- [Send customer care message using POST TEXT](https://developers.esms.vn/en/esms-api/other-apis/send-customer-care-message-using-post-text.md): API dùng để gửi tin Quảng cáo đến khách hàng. Mỗi request tối thiểu 30 số để được duyệt tin và tối đa 5000 số.
- [Send fixed number using GET](https://developers.esms.vn/en/esms-api/other-apis/send-fixed-number-using-get.md)
- [Send advertising message using POST TEXT](https://developers.esms.vn/en/esms-api/other-apis/send-advertising-message-using-post-text.md)
- [Send Zalo message (old version)](https://developers.esms.vn/en/esms-api/other-apis/send-zalo-message-old-version.md)
- [Send personized message via Zalo](https://developers.esms.vn/en/esms-api/other-apis/send-personized-message-via-zalo.md)
- [Send Zalo message using POST X-FORM](https://developers.esms.vn/en/esms-api/other-apis/send-zalo-message-using-post-x-form.md)
- [Send Zalo message full template](https://developers.esms.vn/en/esms-api/other-apis/ham-gui-tin-nhan-zalo-dang-json-full-template.md)
- [Send Viber message using GET](https://developers.esms.vn/en/esms-api/other-apis/ham-gui-tin-nhan-viber-dang-get.md): Cho phép bạn gửi tin nhắn đến số điện thoại đang sử sụng Viber
- [Check code](https://developers.esms.vn/en/esms-api/other-apis/check-code.md): Hàm cho phép bạn gọi API check code xem đã sử dụng, hết hạn.


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://developers.esms.vn/en/esms-api/other-apis.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
