Simplero email verification with BillionVerify
Simplero is an all-in-one platform for coaches, course creators, and online educators — combining email marketing, memberships, landing pages, and digital product delivery. Every broadcast, automation, and course notification relies on subscribers having deliverable email addresses.
Why verify before the send
Course creators invest heavily in content and launches. Sending to unverified lists inflates unsubscribes, triggers spam filters, and damages the sender reputation that future launches depend on. BillionVerify screens for invalid, disposable, and role-based addresses before they enter your Simplero audience, so your emails consistently reach learners who want to hear from you.
Ready-to-use n8n workflow
Import this workflow into n8n — it verifies every address with BillionVerify before Simplero sends, so only deliverable contacts are emailed. Install the BillionVerify community node first, then add your API key.
{
"name": "Verify emails before sending in Simplero + 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 Simplero contacts",
"message": "Replace this Gmail send with your Simplero 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 Simplero
Ready-to-use workflows that verify emails before Simplero sends.
How it works
- 1
Connect BillionVerify to Simplero using the n8n community node, Integrately, or the REST API.
- 2
Trigger verification on new subscriber opt-ins, course purchases, or list imports.
- 3
Send the email address to BillionVerify for analysis covering syntax, domain, disposable detection, and catch-all status.
- 4
Receive a clear deliverability verdict and use it to accept, flag, or reject the contact.
- 5
Keep your Simplero audience populated only with addresses that are genuinely reachable.
When to use this
Verify new subscriber opt-ins
When someone subscribes through a Simplero landing page or lead magnet, verify their email with BillionVerify before adding them to your list. Removing disposable addresses keeps your engagement metrics honest and protects deliverability.
Clean purchased or imported contact lists
Before uploading an external contact list to Simplero for a launch campaign, run it through BillionVerify's bulk API. Purging hard-bounce addresses upfront prevents domain reputation damage that could suppress future broadcasts.
Guard course enrollment emails
When a student purchases or enrolls in a course, verify their email before sending access credentials. An undeliverable welcome email means a student can't log in, creating immediate support burden and negative first impressions.
FAQ
Will email verification reduce my subscriber count?
It will remove addresses that were never going to receive your emails anyway. Your list size decreases slightly, but open rates, click rates, and deliverability all improve because you're measuring real engagement.
Does BillionVerify detect free email providers like Gmail or Yahoo?
Yes, BillionVerify identifies free consumer email providers. You can use this signal to segment audiences or apply additional verification steps, though free addresses are not automatically invalid.
How does catching disposable emails help my launch performance?
Disposable addresses rarely engage and often bounce. Removing them before a launch broadcast protects your sender reputation with email providers, improving inbox placement for the subscribers who genuinely opted in.
Is there a bulk option for cleaning large Simplero audiences?
Yes. BillionVerify's bulk verification API can process thousands of addresses at once, making it practical to audit large course creator audiences before major campaign sends.
Verify emails in Simplero
Create a free account, grab your API key, and stop bounces before they happen.
Get started free