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Verify Facebook lead ads before auto-responding (Facebook → Gmail)

A Facebook Lead Ads submission arrives, gets verified, and a deliverable lead receives an instant Gmail response.

Get a free API keyInstall the n8n node

Why verify before the send

Paid leads are expensive, and lead-ad forms are pre-filled — which means plenty of typo and throwaway addresses. Auto-responding to them wastes spend and damages deliverability. Verify before you reply.

The workflow

Facebook Lead Ads → BillionVerify → Gmail → Google Sheets — verification sits right before the send.

facebook-lead-ads
Facebook Lead Ads Trigger
billionverify
Verify Email
IF deliverable
gmail
Send instant reply
google-sheets
Log invalid lead

Node by node

  1. 1
    Facebook Lead Ads TriggerTrigger· facebook-lead-ads

    Fires on each new lead form submission with the email field.

  2. 2
    Verify EmailVerify· billionverify

    The BillionVerify node, operation "Verify Email". Map its Email field to the address from the previous node. It returns status (valid / invalid / risky / catch-all / role / disposable), is_deliverable, a confidence score, and the reason — all before anything is sent.

  3. 3
    IF deliverableLogic· n8n

    Branches on the verification result. Condition: is_deliverable is true. The true branch continues to the send; the false branch skips the send and flags the contact.

  4. 4
    Send instant replySend· gmail

    Sends the immediate follow-up email via Gmail for deliverable leads only.

  5. 5
    Log invalid leadLogic· google-sheets

    For the false branch: record the invalid lead so you can flag ad sets that attract junk and protect your ad spend.

When to use this

  • Performance marketers running lead-gen campaigns on Meta.
  • Local businesses replying instantly to inbound leads.
  • Teams that want to measure (and reduce) junk-lead rates by ad set.

Three ways to connect

n8n node

Install the BillionVerify community node and drop it into this workflow.

Integrately

1-Click connect BillionVerify with 1500+ apps, no code.

REST API

Call the verification API directly from any stack.

FAQ

Can verification data improve my ads?

Yes. Logging invalid-rate per ad set shows which creatives attract junk, so you can reallocate spend to higher-quality sources.

Does this slow the auto-reply?

Verification adds a fraction of a second — the reply still feels instant to the lead.

What about other ad platforms?

Swap the trigger for TikTok Lead Generation, LinkedIn Lead Gen Forms, or a webhook — the gate is identical.

Add verification to your workflow

Create a free account, grab your API key, and stop bounces before they happen.

Get started free