Deliverability
Spam Filter
Software that analyzes emails to identify and block spam from reaching the inbox.
Definition
A spam filter is software or a service that analyzes incoming emails to identify and block spam. Filters use various techniques including content analysis, sender reputation checks, authentication verification, and machine learning. Emails failing spam checks may be blocked, quarantined, or sent to the spam/junk folder.
Pro Tip
Test your emails through spam filter checkers before sending to identify potential issues.