> ## Documentation Index > Fetch the complete documentation index at: https://docs.open.cx/llms.txt > Use this file to discover all available pages before exploring further. # Blocklist > The Blocklist API lets you manage blocked contacts and blocked email domains. Blocked contacts and domains are ignored by the AI — their messages receive no automated response. The Blocklist API lets you manage blocked contacts and blocked email domains. Blocked contacts and domains are ignored by the AI — their messages receive no automated response. ## Blocked Contacts Block individual contacts by email. Useful for stopping the AI from responding to abusive users, spam accounts, or internal test contacts. ## Blocked Domains Block entire email domains (e.g. "spam.com"). All contacts with emails on blocked domains will be ignored by the AI. Supports blocking multiple domains at once. ## Available Endpoints List all blocked contacts Block a contact by email Check if a contact is blocked Remove a contact from the blocklist List all blocked domains Block one or more email domains Check if a domain or email is blocked Remove a domain from the blocklist