n8n + VerifyAnyEmail

API recipe

In n8n, the HTTP Request node calls the API from any workflow — self-hosted or cloud. All integrations call POST https://api.verifyany.email/v1/verify with an Authorization: Bearer <API_KEY> header and a JSON body of {"email":"..."}. The response includes result.status (deliverable / undeliverable / risky / unknown) and result.score.

Setup

  1. 1
    Add an HTTP Request node

    Method POST, URL https://api.verifyany.email/v1/verify.

  2. 2
    Authentication & headers

    Add header Authorization = Bearer YOUR_API_KEY and X-VAE-Source = n8n. Set “Body Content Type” to JSON.

  3. 3
    JSON body

    Send {"email": "={{ $json.email }}"}.

  4. 4
    Filter on result

    Add an IF node checking {{ $json.result.status }} to route deliverable vs undeliverable.

Handling the result

Every verification returns a result object with a status, a 0–100 score and a “did you mean” suggestion for typos. Branch on the status:

statusMeaningRecommended action
deliverableMailbox exists and accepts mailAccept
undeliverableInvalid syntax, no MX, or rejected mailboxBlock / reject
riskyAccepts but low quality (catch-all, role, disposable)Allow with caution, or challenge
unknownCouldn’t determine (greylist, timeout, blocked port)Allow (fail-open) or retry later

For sign-up and checkout forms, the safe default is to block only undeliverable so you never turn away a real customer, and to surface the suggestion (“did you mean gmail.com?”) inline to recover typos.

Security & reliability

  • Keep your API key server-side. Never expose it in client-side JavaScript. In n8n, store it in the integration’s credential/secret store, not in a shared script.
  • Fail open. If the API errors or times out, let the address through rather than blocking a real user over a transient issue.
  • Retry transient errors. Back off and retry on 429 (rate limit) and 5xx; don’t retry 4xx validation errors.
  • Cache per address. One credit is spent per unique verification — cache results (e.g. 12–24h) so re-submits don’t re-charge.
  • Tag the source. This recipe sends X-VAE-Source: n8n so your dashboard shows where verifications come from.

Troubleshooting

ResponseCause & fix
401Missing or wrong API key — check the Authorization header is Bearer YOUR_API_KEY.
402Out of credits — top up in the dashboard. (The plugin fails open in this case.)
429Rate limited — slow down or upgrade your plan; back off and retry.
No result writtenConfirm you’re reading result.status, and that the request body is { "email": "…" } as JSON.

This is an API recipe, not a one-click app — you wire it up once with the steps above. See the full API reference for every field and error code.

You’ll need a VerifyAnyEmail API key — create a free account and find it in the dashboard under API keys. New accounts include free verification credits.
Create free accountAPI docs

Related integrations

Zapier
Verify emails in any Zap with a Webhooks step.
Make (Integromat)
Verify emails with an HTTP module in any scenario.