Which type of spam trap consists of emails or domains that have never been used?

Pristine traps are designed specifically to catch spammers. They consist of email addresses or domains that have never been used for legitimate purposes and are set up solely for the purpose of identifying spam. Since these addresses have never engaged with any email campaigns or received legitimate messages, their presence in a mailing list indicates that the sender is not following best practices. When a sender's emails are sent to these pristine traps, it signals to email service providers that the sender may be using poor list management strategies, contributing to a reputation for spamming.

Recycled traps typically involve email addresses that were once valid but have been deactivated and are now used as traps. Typo traps capture common misspellings or errors in email addresses that may be inadvertently used by legitimate users, leading to false positives if spammers were to send to these erroneous addresses. Active traps often denote accounts that are used to monitor email activity without appearing as traditional spam traps.