Chargeover email verification with BillionVerify
ChargeOver is a recurring billing and subscription management tool built for B2B businesses. Email addresses in ChargeOver power invoice delivery, payment reminders, and customer notifications. BillionVerify validates those addresses so every billing communication reaches a real inbox.
Why verify before the send
In subscription billing, a single undeliverable email can mean a customer never receives their invoice or payment failure notice — leading to involuntary churn. BillionVerify screens for invalid, disposable, and catch-all addresses at the moment a customer record is created, so your billing communications land where they're supposed to.
Ready-to-use n8n workflow
Import this workflow into n8n — it verifies every address with BillionVerify before Chargeover sends, so only deliverable contacts are emailed. Install the BillionVerify community node first, then add your API key.
{
"name": "Verify emails before sending in ChargeOver + 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 ChargeOver contacts",
"message": "Replace this Gmail send with your ChargeOver 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 Chargeover
Ready-to-use workflows that verify emails before Chargeover sends.
How it works
- 1
A new customer record is created or updated in ChargeOver.
- 2
An automation via n8n (BillionVerify community node) or Integrately picks up the event and submits the email to BillionVerify's REST API.
- 3
BillionVerify returns a verification result covering syntax, domain validity, disposability, and catch-all detection.
- 4
Valid addresses proceed normally; flagged addresses are tagged in ChargeOver and routed for manual review or customer re-engagement.
- 5
All invoice and payment notification workflows operate only on verified, deliverable contacts.
When to use this
Screen new customer records on creation
When a new customer is added to ChargeOver — manually or via integration — verify their email with BillionVerify first. Catch undeliverable addresses before the first invoice goes out and avoid immediate bounces.
Safeguard payment reminder sequences
ChargeOver sends automated reminders for upcoming and overdue payments. Valid email addresses are essential for these sequences to work. BillionVerify ensures the addresses on file are reachable before reminders are queued.
FAQ
How does BillionVerify connect to ChargeOver?
Through n8n using the BillionVerify community node, via Integrately's 1-click setup, or by calling the BillionVerify REST API from a webhook or middleware layer triggered by ChargeOver events.
What types of addresses does BillionVerify flag?
Invalid, non-existent, disposable, role-based (billing@, accounts@), and catch-all addresses are all detected and returned with a risk classification in the API response.
Can I run a bulk check on my existing ChargeOver customers?
Yes. Export your customer list and submit it to BillionVerify's bulk verification endpoint, then import the results to tag or update records in ChargeOver accordingly.
Verify emails in Chargeover
Create a free account, grab your API key, and stop bounces before they happen.
Get started free