> For the complete documentation index, see [llms.txt](https://guides.clickatell.com/release-notes/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://guides.clickatell.com/release-notes/release-notes-archive/2025-release-notes/q4-2025/channel-updates/sms-changes-in-test-message-sending.md).

# SMS: Changes in test message sending

Release date: 17 October 2024

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**.