> For the complete documentation index, see [llms.txt](https://docs.messageflow.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.messageflow.com/email/sender-security.md).

# Sender security

The Sender Security section is the key administrative module responsible for email communication reputation and deliverability. Proper configuration of the parameters available within it ensures that sent messages land directly in recipients' primary inboxes, minimizing the risk of being caught by spam filters.