> For the complete documentation index, see [llms.txt](https://docs.jovianx.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.jovianx.com/documentation/settings/customer-console/emails-blacklist.md).

# Emails Blacklist

**Emails Blacklist** allows setting email address patterns that are not allowed to sign-up to the service. This is useful in cases you would like to prevent certain email address or domain names from registration to the service. 

![Emails Blacklist blocks hotmail.com gmail.com and .edu domain names](https://2226616041-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LdZQYW5C5jmCEGbhAlO%2F-Lr3Wfb9OsX6xaVQP6AF%2F-Lr3YIRH-HRywqsrd3lW%2Fimage.png?alt=media\&token=d8066d2d-a251-48f8-a54d-179a8937d205)

### How to add a new Blacklist rule

1. Click  `Add Rule`  to add a new rule
2. In the text-box enter a pattern. (For example `blacklisteddomain.com`)
3. Click on `Save Blacklist` to save changes