Cloze email verification with BillionVerify
Cloze is an AI-powered relationship management CRM that automatically organizes contacts and communication history. Pairing it with BillionVerify ensures your contact database stays full of deliverable addresses, so outreach sequences and follow-ups reach real people every time.
Why verify before the send
A CRM is only as useful as the data inside it. Invalid, disposable, or catch-all email addresses erode deliverability and make engagement analytics meaningless. BillionVerify scrubs contact emails before they settle into Cloze, keeping your relationship data accurate and your outreach effective.
Ready-to-use n8n workflow
Import this workflow into n8n — it verifies every address with BillionVerify before Cloze sends, so only deliverable contacts are emailed. Install the BillionVerify community node first, then add your API key.
{
"name": "Verify emails before sending in Cloze + 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 Cloze contacts",
"message": "Replace this Gmail send with your Cloze 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 Cloze
Ready-to-use workflows that verify emails before Cloze sends.
How it works
- 1
Connect BillionVerify to Cloze via the n8n community node, Integrately, or a direct REST API call.
- 2
Trigger verification when a new contact is created or when an outreach sequence is about to begin.
- 3
BillionVerify validates the address for syntax, mailbox existence, disposable domains, role accounts, and catch-all status.
- 4
Contacts with unverifiable addresses are tagged or moved to a review segment within Cloze.
- 5
Verified contacts continue through your CRM workflows with confidence that messages will be delivered.
When to use this
Verify contacts on import
When importing a batch of leads or contacts into Cloze, run the email list through BillionVerify first. Remove invalid and disposable addresses so only verified contacts enter your relationship pipeline.
Protect sender reputation during outreach sequences
Before Cloze triggers an automated follow-up sequence, verify the recipient's email address to avoid bounces that could get your domain flagged by email providers.
Enrich new contacts in real time
When a new contact is created in Cloze via a web form or integration, automatically verify the email address and tag undeliverable contacts so your team knows to gather better data before reaching out.
FAQ
Will verifying contacts in real time affect Cloze's automation speed?
BillionVerify's API responds in milliseconds, so real-time verification adds negligible latency to contact creation workflows inside Cloze.
Can I verify my entire existing Cloze contact database?
Yes. Export your contacts, run a bulk verification job through BillionVerify, then update or archive contacts that fail verification to clean up your existing CRM data.
What happens to role addresses like sales@ or support@?
BillionVerify identifies role addresses and flags them separately. You can choose to exclude them from outreach sequences since they typically belong to shared inboxes rather than individual decision-makers.
How does this help my email deliverability?
Sending to invalid addresses generates hard bounces that damage your domain reputation with email providers. Removing bad addresses before sending keeps your bounce rate low and your emails in the inbox.
Verify emails in Cloze
Create a free account, grab your API key, and stop bounces before they happen.
Get started free