# Smart Sending To make sure each customer isn't getting inundated with messages, we created a feature called Smart Sending. When Smart Sending is turned on, an email will not get sent to the customer if one was already sent to them in the send window across all automations and broadcasts in your project. The send window can be adjusted in [Options](https://app.crowdpower.io/settings/options). By default, all new projects have a window of 3 days, and Smart Sending is enabled on all new automations and broadcasts. --- # 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://docs.crowdpower.io/resources/smart-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.