Google Drive email verification with BillionVerify
Google Drive is Google's cloud storage and file management platform used by individuals and teams worldwide to store, share, and collaborate on documents. When email lists or contact exports are uploaded to Drive as spreadsheets or CSVs, BillionVerify can validate those addresses before they reach your marketing or outreach tools.
Why verify before the send
Spreadsheets uploaded to Google Drive often contain email lists gathered from events, lead magnets, or manual imports — sources where quality is unpredictable. Sending to unverified lists in bulk raises bounce rates and damages your domain reputation. Verifying before those files move downstream protects every campaign they feed.
Ready-to-use n8n workflow
Import this workflow into n8n — it verifies every address with BillionVerify before Google Drive sends, so only deliverable contacts are emailed. Install the BillionVerify community node first, then add your API key.
{
"name": "Verify emails before sending in Google Drive + BillionVerify",
"nodes": [
{
"parameters": {},
"type": "n8n-nodes-base.manualTrigger",
"typeVersion": 1,
"position": [
240,
300
],
"name": "When clicking ‘Test workflow’"
},
{
"parameters": {
"assignments": {
"assignments": [
{
"id": "email-field",
"name": "email",
"value": "jane@example.com",
"type": "string"
}
]
},
"options": {}
},
"type": "n8n-nodes-base.set",
"typeVersion": 3.4,
"position": [
460,
300
],
"name": "Get contacts"
},
{
"parameters": {
"sendTo": "={{ $json.email }}",
"subject": "Message for Google Drive contacts",
"message": "Replace this Gmail send with your Google Drive node — only deliverable, verified contacts reach it.",
"options": {}
},
"type": "n8n-nodes-base.gmail",
"typeVersion": 2.1,
"position": [
900,
300
],
"name": "Send email",
"webhookId": "",
"credentials": {
"gmailOAuth2": {
"id": "",
"name": "Gmail account"
}
}
},
{
"parameters": {
"operation": "verify",
"email": "={{ $json.email }}",
"additionalOptions": {}
},
"type": "n8n-nodes-billionverify.billionVerify",
"typeVersion": 1,
"position": [
540,
300
],
"name": "Verify Email (BillionVerify)",
"credentials": {
"billionVerifyApi": {
"id": "",
"name": "BillionVerify account"
}
}
},
{
"parameters": {
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "loose"
},
"combinator": "and",
"conditions": [
{
"id": "is-deliverable",
"leftValue": "={{ $json.is_deliverable }}",
"rightValue": "",
"operator": {
"type": "boolean",
"operation": "true",
"singleValue": true
}
}
]
}
},
"type": "n8n-nodes-base.if",
"typeVersion": 2,
"position": [
720,
300
],
"name": "IF deliverable"
}
],
"connections": {
"When clicking ‘Test workflow’": {
"main": [
[
{
"node": "Get contacts",
"type": "main",
"index": 0
}
]
]
},
"Get contacts": {
"main": [
[
{
"node": "Verify Email (BillionVerify)",
"type": "main",
"index": 0
}
]
]
},
"Verify Email (BillionVerify)": {
"main": [
[
{
"node": "IF deliverable",
"type": "main",
"index": 0
}
]
]
},
"IF deliverable": {
"main": [
[
{
"node": "Send email",
"type": "main",
"index": 0
}
],
[]
]
}
},
"settings": {
"executionOrder": "v1"
}
}Workflow templates with Google Drive
Ready-to-use workflows that verify emails before Google Drive sends.
How it works
- 1
Connect Google Drive to BillionVerify through n8n, Integrately, or the REST API.
- 2
Set a trigger when a new file is added to a specified Drive folder or when a sheet is updated.
- 3
Extract email addresses from the file and send them to BillionVerify for bulk verification.
- 4
Receive a result for each address — valid, invalid, disposable, catch-all, or role-based.
- 5
Write the cleaned, verified list back to Drive or push it directly to your email marketing tool.
When to use this
Validate uploaded contact lists
Trigger BillionVerify automatically when a new CSV or Google Sheet lands in a designated Drive folder. Emails are checked and a cleaned version is written back, ready to import into your email platform without manual scrubbing.
Pre-send list hygiene for agencies
Agencies managing multiple client lists in Drive can route each file through BillionVerify before a campaign goes out. Catch invalid and disposable addresses at the file level, not after a damaging send.
FAQ
Can BillionVerify process large spreadsheets from Drive?
Yes. BillionVerify supports bulk verification via the REST API, so even large lists can be processed efficiently before being used in a campaign.
How do I trigger verification when a file is uploaded?
Using n8n or Integrately, you can watch a Drive folder for new files and automatically pass the contents to BillionVerify without writing custom code.
What happens to addresses that fail verification?
You can configure your workflow to move invalid addresses to a separate sheet, tag them, or simply exclude them from the output file — keeping your usable list clean.
Verify emails in Google Drive
Create a free account, grab your API key, and stop bounces before they happen.
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