> For the complete documentation index, see [llms.txt](https://docs.emaillabs.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.emaillabs.io/en/sms/sms-campaings/campaigns/creating-a-new-sms-campaign/content/additional-options/capacity-sms-h.md).

# Capacity \[SMS/h]

Set the maximum number of messages that can be sent per hour. This option helps control the sending intensity and better manage SMS traffic.