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Google SheetsBillionVerifyInstantly

Verify before uploading to Instantly (Google Sheets → Instantly)

Prospects in a Google Sheet are verified and only the deliverable ones are pushed into an Instantly campaign.

Get a free API keyInstall the n8n node

Why verify before the send

Instantly spreads sends across many mailboxes, but a dirty list still bounces — and bounces there can burn multiple sending accounts at once. Verifying before upload protects your whole sending infrastructure.

The workflow

Google Sheets → BillionVerify → Instantly — verification sits right before the send.

Manual / Schedule Trigger
google-sheets
Get prospects
billionverify
Verify Email
IF deliverable
instantly
Add to campaign

Node by node

  1. 1
    Manual / Schedule TriggerTrigger· n8n

    Kicks off the import of a new prospect batch.

  2. 2
    Get prospectsSource· google-sheets

    Reads the prospect rows you intend to add to the campaign.

  3. 3
    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.

  4. 4
    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.

  5. 5
    Add to campaignSend· instantly

    Adds only deliverable prospects to the Instantly campaign so your mailboxes stay healthy.

When to use this

  • Agencies loading client lists into Instantly at scale.
  • Outbound teams protecting a pool of warmed sending accounts.
  • Anyone who has had Instantly accounts flagged by a bad list.

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

Why not rely on Instantly’s own checks?

Verifying before upload means bad addresses never enter the campaign, so they never count against your sending accounts at all.

Can I verify in bulk for big imports?

Yes. Use the BillionVerify bulk operation or file API for large lists, then upload the clean result.

Does this work with Smartlead or lemlist?

Yes. Replace the Instantly node with your sequencer — the verification gate is the same.

Add verification to your workflow

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

Get started free