Dev Ops · n8n

Block Disposable Email Signups From Poisoning Your Trial Metrics

Disposable-email trial signups inflate your funnel and abuse free tiers. Detect throwaway domains at signup and route them for verification before they count as trials.

difficulty Beginnersetup 25 minresult Trial metrics reflect real prospects because disposable-email signups get caught and verified, not counted blindly.
  1. 1

    Capture the Signup

    Add a Webhook node receiving each new trial email.

  2. 2

    Check the Domain

    Add an HTTP Request to a disposable-domain database.

  3. 3

    Gate the Suspicious

    Add an IF node requiring extra verification for throwaway domains.

  4. 4

    Keep Metrics Clean

    Exclude unverified disposables from your trial funnel counts.

  5. 5

    Activate and Test

    Activate the workflow with a disposable test email. Confirm it's flagged.

Frequently asked questions

Why not just block them?

Some are legitimate privacy-conscious users — verification lets real ones through while stopping abuse.

Metrics impact?

Disposable signups distort activation and conversion rates — clean data means better product decisions.

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