Profitwell email verification with BillionVerify
ProfitWell is a subscription analytics platform that helps SaaS businesses track revenue, churn, and growth metrics. Billing-related and retention emails are time-sensitive and high-stakes. BillionVerify keeps your subscriber email lists clean, ensuring payment failure alerts, dunning sequences, and churn-prevention outreach reach valid inboxes.
Why verify before the send
In subscription analytics, the cost of a failed email is measured in lost revenue. Dunning emails that bounce mean renewals get missed and customers churn silently. Verifying subscriber emails reduces that risk by ensuring addresses are deliverable before your retention workflows depend on them.
Ready-to-use n8n workflow
Import this workflow into n8n — it verifies every address with BillionVerify before Profitwell sends, so only deliverable contacts are emailed. Install the BillionVerify community node first, then add your API key.
{
"name": "Verify emails before sending in ProfitWell + 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 ProfitWell contacts",
"message": "Replace this Gmail send with your ProfitWell 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 Profitwell
Ready-to-use workflows that verify emails before Profitwell sends.
How it works
- 1
Connect BillionVerify to your subscription stack using n8n, Integrately, or the REST API alongside ProfitWell.
- 2
Trigger verification at the moment of subscription sign-up or when a billing contact is updated.
- 3
BillionVerify checks the address for syntax errors, domain validity, disposable-email patterns, and role-address flags.
- 4
Valid subscriber emails proceed to your billing and analytics pipeline; invalid addresses are flagged for review.
- 5
Dunning, renewal, and retention emails reach real mailboxes, reducing involuntary churn and improving recovery rates.
When to use this
Protect dunning and payment recovery sequences
Dunning emails are your last line of defense against involuntary churn. BillionVerify ensures every subscriber email in your dunning sequence is valid and reachable, maximizing recovery rates on failed payments.
Validate emails during trial sign-ups
Trial users who submit disposable emails are unlikely to convert. Verifying addresses at sign-up helps ProfitWell metrics reflect genuine trial cohorts, and your conversion campaigns reach people who can actually receive them.
Screen subscribers before churn-prevention campaigns
Before sending win-back or churn-prevention campaigns to at-risk accounts, verify the contact email to avoid wasting sends on invalid addresses and to protect your domain's deliverability for future outreach.
FAQ
How does verifying emails reduce involuntary churn?
Involuntary churn often happens when payment failure emails never reach the customer. Verifying email addresses ensures dunning sequences land in real inboxes, giving customers a chance to update their payment details.
Can BillionVerify handle bulk verification for existing ProfitWell subscribers?
Yes. You can export your subscriber list and submit it to BillionVerify's bulk API. Each address is returned with a detailed status so you can segment or remove undeliverable contacts before your next campaign.
Does BillionVerify identify disposable emails from trial sign-ups?
Yes. BillionVerify maintains an up-to-date list of disposable email providers and flags addresses from those domains, helping you keep your trial cohorts accurate and your conversion metrics meaningful.
Is there a real-time API for verifying emails at the sign-up form level?
Yes. The BillionVerify REST API responds in under a second for single-address lookups, making it suitable for inline validation on subscription forms before an account is created.
Verify emails in Profitwell
Create a free account, grab your API key, and stop bounces before they happen.
Get started free