BillionVerifyGoogle Calendar

Automated Interview Tracker with Google Calendar, Sheets & Gmail Alerts

Pull contacts, verify each address with BillionVerify, and continue to Google Calendar — only deliverable addresses get through.

Download n8n workflow (JSON)Install the n8n node

Why verify before the send

Sending to invalid, risky, catch-all, or disposable addresses spikes your bounce rate and erodes sender reputation. A verification gate before the Google Calendar step removes that risk automatically — only deliverable addresses continue, the rest are flagged.

The workflow

BillionVerify — verification sits right before the send.

n8n steps

Verify Email (BillionVerify)

Verify Email (BillionVerify) 2

Verify Email (BillionVerify) 3

n8n steps

Verify Email (BillionVerify) 4

n8n steps

Node by node

1
Check Every 5 MinutesTrigger· n8n
Starts the workflow — on a schedule, a webhook, or manually while you test.
2
Webhook: Submit Interview ResultSource· n8n
Provides or transforms the contact data flowing through the workflow.
3
Get Calendar EventsSource· n8n
Provides or transforms the contact data flowing through the workflow.
4
Update Sheet with ResultSource· n8n
Provides or transforms the contact data flowing through the workflow.
5
Filter Upcoming InterviewsLogic· n8n
Routes items based on the workflow logic.
6
Check if PassedLogic· n8n
Branches on the verification result: only deliverable addresses continue to the send; the rest are skipped and flagged.
7
Add to Google SheetSource· n8n
Provides or transforms the contact data flowing through the workflow.
8
Verify Email (BillionVerify)Verify· billionverify
The BillionVerify node verifies the address — status (valid / invalid / risky / catch-all / role / disposable), is_deliverable, and a confidence score — before anything is sent.
9
Verify Email (BillionVerify) 2Verify· billionverify
The BillionVerify node verifies the address — status (valid / invalid / risky / catch-all / role / disposable), is_deliverable, and a confidence score — before anything is sent.
10
Verify Email (BillionVerify) 3Verify· billionverify
The BillionVerify node verifies the address — status (valid / invalid / risky / catch-all / role / disposable), is_deliverable, and a confidence score — before anything is sent.
11
IF deliverableLogic· n8n
Branches on the verification result: only deliverable addresses continue to the send; the rest are skipped and flagged.
12
IF deliverable 2Logic· n8n
Branches on the verification result: only deliverable addresses continue to the send; the rest are skipped and flagged.
13
IF deliverable 3Logic· n8n
Branches on the verification result: only deliverable addresses continue to the send; the rest are skipped and flagged.
14
Send Reminder to CandidateSend· n8n
Sends only to verified, deliverable addresses. Swap in your own provider node if you send elsewhere.
15
Email Candidate - PassedSend· n8n
Sends only to verified, deliverable addresses. Swap in your own provider node if you send elsewhere.
16
Email Candidate - FailedSend· n8n
Sends only to verified, deliverable addresses. Swap in your own provider node if you send elsewhere.
17
Verify Email (BillionVerify) 4Verify· billionverify
The BillionVerify node verifies the address — status (valid / invalid / risky / catch-all / role / disposable), is_deliverable, and a confidence score — before anything is sent.
18
IF deliverable 4Logic· n8n
Branches on the verification result: only deliverable addresses continue to the send; the rest are skipped and flagged.
19
Email ManagerSend· n8n
Sends only to verified, deliverable addresses. Swap in your own provider node if you send elsewhere.

Workflow JSON

Copy or download this workflow, then import it in n8n (Workflows → Import from File / Paste). Install the BillionVerify community node first, then add your API key credential.

verify-emails-in-google-calendar.json19 KB · n8n workflow

Download

When to use this

Cleaning a list before a Google Calendar send or sync.
Protecting Google Calendar deliverability and sender reputation.
Keeping bounce rates low so your sending is never throttled.

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 verify before sending in Google Calendar?

Verifying first keeps your bounce rate low, which protects your sender reputation and your results.

How do I import this workflow?

Download the JSON, then in n8n go to Workflows → Import from File (or paste it). Install the BillionVerify community node and add your API key credential.

What happens to risky or catch-all addresses?

They are routed to the false branch and excluded from the send. You decide whether to retry, review, or drop them.

Add verification to your workflow

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

Get started free