Spam trap
A spam trap is an email address created or repurposed by mailbox providers and anti-spam organisations solely to catch senders with poor list hygiene — mailing one signals you don't have genuine permission, and can badly damage your reputation.
How spam traps work
A spam trap is an address that should never receive legitimate, opt-in mail. Because a real person never signed up with it, any message that arrives is proof the sender is mailing addresses they didn't earn — through scraping, buying lists or poor hygiene. Hitting one tells providers and blocklist operators to distrust you.
The three types of spam trap
- Pristine traps — addresses created only as traps, never used by a human. Hitting one means your list has scraped or purchased addresses.
- Recycled traps — real addresses abandoned by their owner, then reactivated as traps after a long dormancy. Hitting one means you mail people who stopped engaging long ago.
- Typo traps — addresses at misspelled domains (gmial.com) that catch mail from senders who don't validate input at signup.
How to avoid spam traps
- Never buy, rent or scrape lists — this is the number-one source of pristine traps
- Use double opt-in so every address is confirmed and real
- Validate addresses at the point of capture to catch typos
- Remove long-term non-openers before they decay into recycled traps
- Keep bounce and complaint rates low with consistent list hygiene
Frequently asked questions
How do I know if I hit a spam trap?
Traps are invisible by design — you won't get a bounce. The signs are indirect: a sudden drop in inbox placement, a blocklisting, or a warning in provider postmaster tools.
Can I remove a spam trap from my list?
You can't identify individual traps directly. The fix is hygiene: drop non-engaged contacts, stop mailing unconfirmed addresses, and never use purchased lists.
How much damage does one spam trap do?
It depends on the type and provider. A single pristine trap from a purchased list can trigger a blocklisting; recycled traps hurt gradually as they signal stale list hygiene.
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