Signal & Syntax · Email deliverability

What Is a Spam Trap?

A spam trap is an address blocklists and mailbox providers run to catch poor list hygiene. Spam traps never opt in.

Also calledspamtrap · honeypot address

Spam Trap in Practice

Pristine traps are addresses never used by a person, planted where scrapers find them. Recycled traps are abandoned addresses a provider reactivated after a dormant period. A hit on either type damages sender reputation. A list with trap hits carries other stale addresses too.

Related Terms

Sender reputation Sender reputation is the standing mailbox providers give a sending domain and IP. Hard bounce A hard bounce is a permanent email delivery failure. Role-based email address A role-based email address belongs to a function instead of a named mailbox holder. DMARC DMARC is a DNS policy for mail failing SPF and DKIM alignment.

Read the Guide

Guide

MX Records, SMTP Codes and Bounces Explained

How an email finds a mailbox, and how the server answers. Read the guide →

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