ShieldSignup

Providers/Mailinator

Disposable / temporary
email_disposable

Mailinator

Mailinator provides disposable inboxes that anyone can read without signing up. Addresses on its domains are short-lived and commonly used in automated signup abuse.

Attackers generate unique Mailinator addresses at scale to farm free trials, bypass one-account limits, and pollute product analytics with fake users.

Example domains

Public domains commonly associated with Mailinator. ShieldSignup coverage is broader (marketing: 94,000+ disposable domains) — this page lists examples only, not every domain the provider may use.

  • mailinator.com
  • mailinator.net
  • mailinator2.com

Block with ShieldSignup

Call POST /v1/assess with the signup email. For known domains of this type, expect reason code email_disposable and signals.email.disposable: true.

curl -sS -X POST https://www.shieldsignup.com/v1/assess \
  -H "Authorization: Bearer sk_live_…" \
  -H "Content-Type: application/json" \
  -d '{"email":"user@mailinator.com","ip":"203.0.113.10"}'

Read the temporary email blocking guide →

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