Feedier email verification with BillionVerify
Feedier is a feedback and survey platform that helps businesses collect structured responses from customers. When email addresses enter your Feedier forms, verifying them with BillionVerify removes invalid, disposable, and role-based addresses before they pollute your contact database or trigger costly bounces on follow-up campaigns.
Why verify before the send
Survey responses often include mistyped or throwaway email addresses that inflate your list without adding value. BillionVerify catches invalid formats, disposable domains, and catch-all addresses at the point of collection, so your Feedier contact exports stay clean and follow-up outreach actually reaches real inboxes.
Ready-to-use n8n workflow
Import this workflow into n8n — it verifies every address with BillionVerify before Feedier sends, so only deliverable contacts are emailed. Install the BillionVerify community node first, then add your API key.
{
"name": "Verify emails before sending in Feedier + 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 Feedier contacts",
"message": "Replace this Gmail send with your Feedier 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 Feedier
Ready-to-use workflows that verify emails before Feedier sends.
How it works
- 1
Connect Feedier and BillionVerify via the n8n community node or Integrately's 1-click setup.
- 2
Set a trigger on new Feedier form submissions to pass the respondent's email to BillionVerify.
- 3
BillionVerify checks for invalid syntax, disposable domains, role addresses, and catch-all mailboxes.
- 4
Filter the result: route verified addresses to your CRM or mailing list; quarantine or discard the rest.
- 5
Your Feedier-sourced contacts are clean, bounce-free, and ready for follow-up outreach.
When to use this
Clean Feedback Form Submissions
Every time a respondent submits a Feedier form, BillionVerify validates their email in real time. Invalid or disposable addresses are flagged before they enter your pipeline, keeping your contact list accurate from the start.
Protect Email Follow-Ups After Surveys
Feedier lets you send follow-up emails to respondents. Verify addresses first so your sender reputation stays intact and you're not wasting credits on addresses that will hard-bounce.
FAQ
Can I verify emails from Feedier forms in real time?
Yes. Using an n8n workflow or Integrately automation, each new submission triggers an instant BillionVerify API call before the address is saved or used in any follow-up flow.
What types of bad addresses does BillionVerify catch?
BillionVerify detects invalid formats, non-existent mailboxes, disposable email domains, role addresses like info@ or support@, and catch-all domains that accept any email without confirming delivery.
Does this work with Feedier's bulk export too?
Yes. You can also pass a batch of existing Feedier contacts through BillionVerify's bulk verification endpoint to clean historical data before launching a campaign.
Verify emails in Feedier
Create a free account, grab your API key, and stop bounces before they happen.
Get started free