Spam traps
Also called: Spamtrap, Honeypot address
Spam traps are email addresses run by mailbox providers and blocklist operators to find senders who don’t collect addresses properly. Nobody signs up with them, so any mail they receive is unsolicited.
Traps can be addresses that were never used by a person, or old addresses that were abandoned and later turned into traps. M3AAWG publishes best practices for how they are built and operated (M3AAWG).
How it affects cold email
Hitting traps can get your domain blocklisted or your mail filtered. Bought, scraped and very old lists are the usual cause. There is no reliable way to spot a trap in a list, so the fix is sourcing: email people you found for a reason, recently, and verify before sending.
How Inboxed handles it
- Inboxed can’t identify traps either. It reduces the risk with verification on every lead, automatic pauses on high bounce rates, and blocklist checks every 6 hours. Its acceptable use policy forbids bought lists of people who never shared their address publicly.
Related terms
Sources
Sources checked on 8 November 2026. Rules change, so check the source before you rely on a detail.
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