# SMS: Changes in test message sending Our SMS test message feature now **requires a positive account balance** to enable. Note that SMS test messages remain **completely free** and will not be deducted from your balance. You can add **two** test phones per account, and the number of free test SMS messages you can send per account is limited to **10 per day** with an overall maximum of **100 per month**. --- # 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://guides.clickatell.com/release-notes/release-notes-archive/2024-release-notes/q4-2024/channel-updates/sms-changes-in-test-message-sending.md?ask= ``` 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.