> 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/email/email-api/blacklist-report/domains-blacklist.md).

# Domains Blacklist

The domain blacklist feature allows for the blocking of entire domains, which is especially useful for addressing frequent typos (e.g., *gamil.com*) or domains associated with unwanted recipients. This function helps prevent messages from being sent to problematic or incorrectly entered domains, maintaining the quality of your recipient database and improving deliverability.