Gmail and QuickBooks Online workflow
Pull contacts, verify each address with BillionVerify, and continue to QuickBooks Online — only deliverable addresses get through.
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 QuickBooks Online step removes that risk automatically — only deliverable addresses continue, the rest are flagged.
The workflow
BillionVerify — verification sits right before the send.
Node by node
- 1Every Day at 8 AMTrigger· n8n
Starts the workflow — on a schedule, a webhook, or manually while you test.
- 2New Email Receipt ReceivedTrigger· n8n
Starts the workflow — on a schedule, a webhook, or manually while you test.
- 3Verify 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.
- 4IF deliverableLogic· n8n
Branches on the verification result: only deliverable addresses continue to the send; the rest are skipped and flagged.
- 5Get New Receipt from EmailSend· n8n
Sends only to verified, deliverable addresses. Swap in your own provider node if you send elsewhere.
- 6Verify 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.
- 7IF deliverable 2Logic· n8n
Branches on the verification result: only deliverable addresses continue to the send; the rest are skipped and flagged.
- 8Forward the Receipt to QBOSend· n8n
Sends only to verified, deliverable addresses. Swap in your own provider node if you send elsewhere.
- 9Verify 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.
- 10IF deliverable 3Logic· n8n
Branches on the verification result: only deliverable addresses continue to the send; the rest are skipped and flagged.
- 11Remove the Old LabelSend· n8n
Sends only to verified, deliverable addresses. Swap in your own provider node if you send elsewhere.
- 12Verify 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.
- 13IF deliverable 4Logic· n8n
Branches on the verification result: only deliverable addresses continue to the send; the rest are skipped and flagged.
- 14Add the "Processed" LabelSend· 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.
When to use this
- Cleaning a list before a QuickBooks Online send or sync.
- Protecting QuickBooks Online deliverability and sender reputation.
- Keeping bounce rates low so your sending is never throttled.
FAQ
Why verify before sending in QuickBooks Online?
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