What is a Blocklist?
A blocklist is essentially the modern, more inclusive term for a blacklist—a database of email addresses, domains, or IP addresses that should be blocked from reaching inboxes.
The terminology shift from "blacklist" to "blocklist" reflects broader industry moves toward more inclusive language. Functionally, they're identical: both prevent emails from reaching recipients.
Note: In email deliverability, "blocklist" and "blacklist" are used interchangeably. Some organizations prefer "blocklist" for inclusivity reasons, but the mechanisms and impacts are the same.
For detailed information on how blocklists work, prevention, and remediation, see Blacklist.
Related Terms
B2B (Business to Business)
Transactions between two businesses, not between business and consumer.
B2C (Business to Consumer)
Transactions between business and individual consumers.
Backlink Outreach
Cold email strategy targeting websites for link-building opportunities.
Bad Lead
Prospect unlikely to convert due to budget, authority, need, or timing misalignment.
